Activated carbon for gold extraction plays a crucial role in gold smelting, and with its unique adsorption properties, it has become an indispensable material in the gold extraction process. In this paper, Huamei carbon will discuss the advantages, principles, usage and market prospects of activated carbon for gold extraction, to show readers the charm of this amazing material.
Huamei gold extraction with activated carbon mainly charbon actif en coquille de noix de coco and coal-based activated carbon and other types. Among them, coconut shell activated carbon has a large specific surface area, large microporous volume, fast adsorption speed, large adsorption amount of gold, better abrasion resistance, easy to reactivate and use. Commonly used properties of activated carbon for gold extraction are iodine adsorption value ≥950mg/g, particle size 6-16 mesh ≥90%, strength ≥97%, moisture ≤10%, filling density 450 - 550g/L and so on.
(I) High adsorption performance
Activated carbon for gold extraction is characterized by large specific surface area and large microporous volume. According to the data, the surface area of 1 gram of activated carbon is equivalent to the surface area of a soccer field, and such a large surface area makes activated carbon an ideal adsorbent. Its rich microporous structure is suitable for adsorption of certain inorganic complex ions from solution, including gold-cyanide complex ions. Since the cross-section of the carbon micropores is similar to the diameter of the gold-cyanide complex ions, the gold-cyanide complex ions need to undergo a slow diffusion process to be adsorbed. To enhance the diffusion process, the slurry is stirred sufficiently during the carbon slurry gold extraction process to facilitate the adsorption of gold by the activated carbon. This unique structure makes the activated carbon on the adsorption of gold, can effectively extract gold, play a key role in the gold extraction process.
(ii) Better abrasion resistance
In the carbon slurry process, activated carbon with better abrasion resistance shows greater resistance to abrasion. Activated carbon with greater strength can maintain lower loss under strong impact and grinding. On the other hand, activated carbon with less strength is easy to be abraded and thinned, and finally carries a large amount of adsorbed gold through the interstage sieve and loses with the tailings. For example, the commonly used activated carbon for gold extraction has a strength of ≥97%, which ensures the stability of the activated carbon in the process and reduces the loss of gold.
(iii) Easy to reactivate and utilize
When the activated carbon adsorbs a large number of impurities, it will lose its activity, and at this time, its adsorption capacity can be restored through acid washing, thermal regeneration and other methods. Activated carbon should be acid washed before regeneration to remove organic matter, in order to remove alkali metal oxides. Generally, the deactivated carbon is regenerated to remove organic matter after 3 to 5 cycles of acid washing, and then returned to the activated carbon adsorption section. This reduces the loss of carbon, saves electricity and has no effect on the adsorption rate. Through these methods, the activated carbon can be recycled, reducing the cost of gold extraction.
When selecting charbon actif pour la récupération de l'or, key properties such as its strength, saturated gold loading capacity, adsorption speed and resolution rate need to be considered. Activated carbon with greater strength can show greater resistance to abrasion in the carbon slurry process flow and reduce the loss of gold. Activated carbon with high adsorption speed, high saturated gold loading capacity and high resolution rate can increase the efficiency and yield of gold extraction.
Overall, the principle of activated carbon for gold extraction is to realize effective adsorption and extraction of gold through its unique porous structure and chemical properties. This principle provides an efficient, economical and environmentally friendly method for gold smelting.
The demand for gold continues to rise: with the development of the global economy and people's demand for wealth preservation, the demand for gold as an important precious metal continues to grow. Activated carbon for gold extraction plays a key role in the gold extraction process, and the increase in gold demand will inevitably drive the market demand for activated carbon for gold extraction.
Improvement of environmental protection requirements: People's requirements for ecological and environmental protection are getting higher and higher, and the application scope of activated carbon in the field of environmental protection is getting wider and wider. For example, activated carbon plays an important role in sewage treatment and air purification. Activated carbon for gold extraction produces relatively less waste in the process of use and meets the requirements of environmental protection, which also provides favorable conditions for its market development.
Driven by technological progress: With the continuous progress of technology, the performance of activated carbon for gold extraction is also constantly improving. For example, new activated carbon materials have higher adsorption performance, better abrasion resistance and easier regeneration, and these technological advances will further promote the market development of activated carbon for gold extraction.
Precious metal extraction: In addition to gold extraction, activated carbon for gold extraction can also be used for the extraction of other precious metals, such as silver, platinum and palladium. As the application of these precious metals in the field of electronics, chemical industry, medicine and so on continues to expand, the demand for activated carbon for gold extraction will also gradually increase.
Environmental protection: In the field of environmental protection, activated carbon for gold extraction can be used in sewage treatment, air purification, soil remediation and so on. With the continuous strengthening of environmental protection policy and people's increasing demand for environmental quality, the application of activated carbon for gold extraction in the field of environmental protection has a broad prospect.
Huamei Activated Carbon has passed ISO9001-2000 international quality system certification. Relying on market information feedback, in close cooperation with the scientific research department, Huamei Activated Carbon continuously develops new products to add new vitality to the rolling development of the enterprise. All kinds of products are widely used in chemical industry, foodstuff, medicine, textile, electronics, steel, petroleum, household, sewage treatment, water purification and environmental protection and other industrial fields.
In the field of waste gas treatment, activated carbon is a widely used adsorption material that can efficiently remove various volatile organic compounds (VOCs). However, how much VOC can 1 ton of activated carbon adsorb? The answer to this question is not a simple number, but is influenced by a number of factors. Huamei activated carbon will explore these factors in depth and provide some reference data in practical applications.
The quality of activated carbon is one of the key factors to determine its adsorption capacity. In general, the quality of activated carbon is measured by indicators such as specific surface area and iodine adsorption value. The larger the specific surface area, the stronger the adsorption capacity of activated carbon. Under normal circumstances, the adsorption capacity of columnar activated carbon is between 400 and 800 kg, while high-quality activated carbon can reach about 1200 kg.
Different kinds of VOC, their molecular structure and properties are different, resulting in the difficulty of adsorption by activated carbon is also different. Common VOCs include toluene, benzene, xylene, ethylene, etc. These compounds have different physical and chemical properties such as molecular size, polarity and boiling point, which directly affect their adsorption capacity on activated carbon.
For example, toluene is a common VOC with a large molecular weight and certain polarity, so its adsorption capacity on activated carbon is high. According to the experimental data, 800 iodine granular activated carbon in the case of low humidity, the adsorption capacity of toluene can reach more than 30%, which means that 1 ton of activated carbon can absorb about 0.4 tons of toluene. For some VOCs with small molecular weight and weak polarity, their adsorption capacity on activated carbon may be relatively low.
The ambient humidity has a significant effect on the adsorption performance of activated carbon. When the humidity is high, the water molecules in the air will compete for the adsorption site of the activated carbon, reducing its adsorption capacity for VOC. Especially for highly polar VOCs, such as aldehydes and ketones, the effect of humidity is particularly obvious.
In a higher humidity environment, the adsorption capacity of activated carbon may decrease significantly. For example, at a relative humidity of 80%, the adsorption capacity of activated carbon for certain VOCs may be only half of that in a dry environment. Therefore, in practical applications, it is often necessary to prevent the air flow and reduce the humidity to improve the adsorption efficiency of activated carbon.
Temperature is also an important factor affecting the adsorption performance of activated carbon. In general, the increase in temperature will lead to a decrease in the adsorption capacity of activated carbon for VOC. This is because increasing temperature increases the kinetic energy of VOC molecules, making it easier to desorb them from the surface of activated carbon.
For example, at room temperature (25 ° C), the adsorption capacity of activated carbon for certain VOCs may reach its maximum, while at high temperatures (such as 50 ° C), its adsorption capacity may be significantly reduced. Therefore, in waste gas treatment, maintaining the appropriate temperature is very important to ensure the efficient adsorption of activated carbon.
The working conditions include airflow velocity, VOC concentration and activated carbon bed thickness, etc. These factors jointly determine the adsorption effect of activated carbon. In practical applications, high airflow speed will lead to insufficient residence time of VOC on activated carbon and reduce its adsorption efficiency. However, too low airflow speed may lead to increased system resistance and affect the overall treatment effect.
In addition, VOC concentration is also an important factor. At low concentrations, the adsorption capacity of activated carbon may be limited, while at high concentrations, the adsorption site of activated carbon is easily saturated. Therefore, when designing the exhaust gas treatment system, it is necessary to set the VOC concentration and airflow speed reasonably to ensure the best adsorption effect.
According to the data in practical applications, the VOC adsorption amount of 1 ton of activated carbon can vary greatly. For example, in the treatment of toluene waste gas, 1 ton of high-quality activated carbon under appropriate working conditions, its adsorption capacity can reach more than 0.4 tons. For some VOCs with small molecular weight and weak polarity, the adsorption capacity may be significantly reduced.
In summary, how much VOC can be adsorbed by 1 ton of activated carbon is affected by many factors such as activated carbon quality, VOC types, environmental humidity, temperature and working conditions. In practical applications, it is necessary to consider these factors comprehensively, select the appropriate activated carbon and optimize the system design to ensure the best adsorption effect. For different waste gas treatment needs, it is recommended to carry out detailed experimental tests before actual operation to determine the best process parameters and activated carbon types, so as to achieve the ideal treatment effect.
In order to give full play to the adsorption capacity of activated carbon in practical applications, the following are some suggestions for selecting and optimizing activated carbon:
Preferentially select activated carbon with a large specific surface area to provide more adsorption sites. In general, activated carbon with a specific surface area of more than 1000 square meters/gram has better adsorption capacity.
activated carbon with different pore sizes has different adsorption effects on VOC molecules of different sizes. For large molecular weight VOCs, such as toluene and xylene, it is better to choose activated carbon with a larger pore size.
In a high humidity environment, it is recommended to pretreat the air flow and reduce the humidity to improve the adsorption efficiency of activated carbon. Common methods include the use of dryers or condensers.
Try to control the system temperature within the normal temperature range to avoid the negative impact of high temperature on the adsorption capacity of activated carbon. If processing high temperature exhaust gas, it is recommended to cool down before activated carbon adsorption.
When designing the exhaust gas treatment system, set the airflow speed and VOC concentration reasonably
Through the above optimization measures, the adsorption performance of activated carbon can be effectively improved in practical applications, so as to better deal with various VOC waste gases, and achieve the purpose of environmental protection and pollution control.
How much VOC can be adsorbed by 1 ton of activated carbon is a complex problem, which is comprehensively affected by many factors. In practical application, selecting suitable activated carbon and optimizing system design can significantly improve its adsorption effect. By comprehensively considering the quality of activated carbon, VOC types, environmental humidity, temperature and working conditions and other factors, the best adsorption effect can be achieved in the waste gas treatment process, and contribute to environmental protection and pollution control.
When discussing the practical topic of how to buy activated carbon, we first need to clarify the basic nature of activated carbon, its use and the wide range of products on the market, so as to make an economical and efficient choice. Activated carbon, with its strong adsorption capacity, is widely used in air purification, water purification, food decolorization, medical refining and other fields, and has become an indispensable environmental purification material in modern life.
Activated carbon is a specially treated carbon material with a porous structure, and these micropores can greatly increase its surface area, thereby enhancing the adsorption capacity of impurities in gases and liquids. According to the different raw materials and manufacturing processes, activated carbon can be divided into wood activated carbon, coal activated carbon, fruit shell activated carbon and other types, each type in the adsorption performance, physical form of each has its own advantages, choose the right activated carbon is very important.
By raw material source:
1. Wood activated carbon
2. Animal bone/blood activated charcoal
3. Mineral raw material activated carbon
4. Activated carbon from other raw materials
5. Recycled activated carbon
By manufacturing method
1. Chemical Activated carbon (chemical carbon)
2. Physical activated carbon (physical carbon)
3. Chemical-physical method or physical-chemical method activated carbon
According to appearance shape:
1. Powdered activated carbon
2. Charbon actif en granulés
3. Amorphous granule activated carbon
4. Cylindrical activated carbon
5. Spherical activated carbon
6. Activated carbon in other shapes
By aperture:
1. Large hole: aperture > 1000A°
2. Transition hole: aperture 20 ~ 1000A°
3. Micropores: The surface area of activated carbon with a aperture <20A° is mainly provided by micropores.
1. Wood activated carbon: activated carbon made of wood chips, charcoal, etc
2. Fruit shell activated carbon: activated carbon made of coconut shell, walnut shell, apricot shell, etc
3. Coal-based activated carbon: activated carbon made of lignite, peat, bituminous coal, anthracite, etc
4. Petroleum activated carbon: such as asphalt-based spherical activated carbon made of asphalt and other raw materials
5. Recycled carbon: recycled activated carbon with used waste carbon as raw material for reactivation
Before purchasing activated carbon, it is important to identify the use scenario and needs. Here are a few suggestions:
According to the application field selection: such as in the field of water purification, you can choose coal activated carbon or wood activated carbon. In the field of gold extraction, wood activated carbon can be selected. In the field of food processing, you can choose fruit shell activated carbon.
Select according to adsorption performance: Adsorption performance is one of the most important indicators of activated carbon, and its adsorption performance can be evaluated by comparing the specific surface area and pore volume of different types of activated carbon. In general, the larger the specific surface area, the better the adsorption performance.
Select according to particle size: The particle size of activated carbon will also affect its adsorption performance and use scenario. In general, the smaller the particle, the faster the adsorption rate, but it is also easy to cause blockage. The larger the particle, the slower the adsorption rate, but not easy to plug. Therefore, it is necessary to select the appropriate particle size according to the specific application scenario.
Selection according to cost: the price of different types of activated carbon varies greatly, and the appropriate activated carbon needs to be selected according to the actual application scenario and cost budget.
1. Iodine adsorption value: It is one of the important indicators to measure the adsorption capacity of activated carbon, the higher the value, the stronger the adsorption capacity.
2. Carbon tetrachloride adsorption rate: also reflects the adsorption performance of activated carbon, especially suitable for evaluating its performance in water treatment.
3. Ash and moisture content: High ash content may affect the adsorption effect, while excessive moisture content may reduce the actual use efficiency of activated carbon.
4. Particle size and pore size distribution: The appropriate particle size helps the activated carbon to distribute evenly in a specific space and improve the adsorption efficiency. The pore size distribution affects the adsorption capacity of different sized molecules.
Check before use: ensure that the activated carbon package is intact and not damaged to avoid contamination before use.
Regular replacement: The adsorption capacity of activated carbon is limited, and it needs to be replaced regularly according to the use situation to ensure the best purification effect.
Proper storage: Unopened activated carbon should be stored in a dry, ventilated place to avoid moisture affecting performance.
Combined use: For complex environments or high requirements, activated carbon can be considered in combination with other purification materials to achieve a better purification effect.
In summary, when choosing to use activated carbon, it is necessary to comprehensively consider the specific needs, treatment effect requirements and economic costs and other factors to achieve the best treatment effect and economic benefits. Huamei Carbon has more than 20 years of activated carbon manufacturing experience. We use anthracite, bituminous coal, coconut shell, wood as raw materials to produce granular activated carbon, granular activated carbon, powdered activated carbon. Our technicians and sales team will provide you with the best solution for your project. You can always contact us for affordable prices on activated carbon products.
Activated carbon isn’t just for water; it’s also the unsung hero of air purification. Different forms of activated carbon, such as cloth, pelletized, and granular, are employed to filter gases that you’d rather not inhale. For instance, it’s used to remove hydrogen sulfide from natural gas and to ensure that the air conditioning unit in your car doesn’t make you choke on radon and other delightful odors. So next time you take a deep breath, maybe send a thank-you note to the activated carbon silently doing its job.
In the mining industry, activated carbon is the go-to material for recovering precious metals like gold. Its adsorbent nature allows it to separate carbon from cyanide during the final stages of mining. So, the next time you marvel at a gold ring or necklace, spare a thought for the activated carbon that helped bring that shiny trinket to life.
Activated carbon is also a silent player in the food and beverage sector, ensuring that what you consume isn’t tainted by unwanted flavors or by-products. It’s used to purify concentrated juices, remove impurities from sweeteners, and generally ensure that what you’re eating or drinking is up to snuff. Because nothing says “refreshing” like knowing your drink has been filtered through a material that could just as easily be cleaning up toxic spills.
When it comes to water purification, activated carbon is used as both a primary and tertiary treatment. In the initial stages, it helps remove large particles—because who wants to drink chunky water? In the final stages, it improves taste and controls odors. So, whether you’re dealing with city water that tastes like a swimming pool or well water that smells like rotten eggs, activated carbon is your best friend.
Granulated activated carbon (GAC) is the type you call on when you need something a bit more substantial than powder but less cumbersome than pellets. It’s primarily used in deodorization, air treatment, and water treatment. GAC offers a smaller external surface than powdered forms, making it the Goldilocks of activated carbon—not too big, not too small, but just right.
Pelletized activated carbon is essentially powdered carbon that’s been compressed into pellets. It’s like activated carbon on steroids—stronger, more durable, and ideal for gas-phase applications. Thanks to its low dust content, good mechanical strength, and low-pressure drop, pelletized activated carbon is the go-to choice when you need something that won’t crumble under pressure.
Powdered activated carbon (PAC) is the fine stuff, usually added directly to process units like raw water intakes and clarifiers. It’s effective but comes with a caveat—using it in a dedicated vessel can lead to head loss, making it less than ideal for some applications. But when you need a quick fix, PAC is the go-to choice for many.
Impregnated activated carbon is infused with inorganic impregnates like silver and iodine, making it the overachiever of the bunch. It’s primarily used in the purification of domestic potable water, where its extra chemical kick helps ensure that what comes out of your tap is as clean as possible.
Catalytic activated carbon, also known as surface-modified activated carbon, doesn’t just adsorb contaminants—it also initiates and enhances chemical processes. This makes it particularly useful in removing contaminants from drinking water. So, not only does it grab onto pollutants, but it also helps break them down, making it the smarty-pants of the activated carbon world.
Activated carbon’s adsorptive nature makes it incredibly effective at removing contaminants from water. This isn’t just about making water look clear; it’s about making it safe to drink. So, the next time you take a sip of water, remember that activated carbon is working behind the scenes to ensure you’re not ingesting something you shouldn’t be.
Let’s face it: no one wants to drink water that tastes or smells bad. Activated carbon is your best bet for improving the taste and odor of water, turning something that’s barely drinkable into something that’s actually pleasant. So, if you’ve ever enjoyed a glass of water that didn’t taste like it came from a swamp, you’ve got activated carbon to thank.
One of the biggest reasons activated carbon is so popular in water treatment is its ability to absorb a wide range of components. It’s not a one-trick pony; it can handle everything from chlorine to volatile organic compounds (VOCs). This versatility makes it an attractive option for water purification plants that need to get the most bang for their buck.
Activated carbon is nothing if not reliable. It’s been used in water treatment for years and has proven time and again that it can get the job done. As long as you’re using the right type of activated carbon for the job, there’s little chance of failure. It’s a tried-and-true solution that has stood the test of time, and it’s not going anywhere anytime soon.
In a world full of contaminants, pollutants, and all manner of unsavory substances, activated carbon stands as a silent guardian, purifying our water, cleaning our air, and ensuring that the things we eat and drink are safe. It may not get the recognition it deserves, but make no mistake—without activated carbon, our world would be a much dirtier place. So, the next time you take a sip of water, breathe in some fresh air, or enjoy a meal, remember the humble activated carbon that made it all possible.
We export to global markets, and Huamei Carbon's global team is constantly expanding to provide the highest level of support to all of our customers and suppliers. At present, we export to more than 60 countries and regions. Besides, all of our customers almost are satisfied with our activated carbon. Here are some customer feedbacks on our activated carbon
Activated carbon is a versatile material with numerous applications, from air and water purification to industrial processes and even medical uses. Choosing the right type of activated carbon for your specific needs can significantly enhance its effectiveness and efficiency. This article is Huamei activated carbon to take you to understand the factors to consider when choosing activated carbon.
Activated carbon, also known as activated charcoal, is a form of carbon that has been processed to create a vast network of micropores. This unique structure gives it an incredibly high surface area, which allows it to adsorb impurities and contaminants effectively. There are various types of activated carbon, including granular, powdered, and extruded forms, each suited to different applications.
The first step in selecting the right activated carbon is to determine its intended use. Are you aiming to purify drinking water, remove odors from the air, or eliminate specific chemical contaminants? Different applications require different types of activated carbon:
- Water Treatment: Granular activated carbon (GAC) is often preferred for drinking water purification, while powdered activated carbon (PAC) is used for smaller systems and quick filtering.
- Air Purification: Both GAC and PAC can be used, but choose a type that targets specific volatile organic compounds (VOCs) if necessary.
- Industrial Uses: Specific applications may require specialized activated carbons designed to adsorb particular chemicals or compounds.
The adsorption capacity of activated carbon refers to its ability to capture contaminants. This is influenced by the type of material, surface area, and pore structure. When choosing activated carbon, consider the following:
- Surface Area: Generally, a higher surface area will lead to better adsorption capabilities.
- Pore Size Distribution: Different contaminants are adsorbed in different pore sizes. Ensure the activated carbon has the proper pore structure for your specific application.
Different types of activated carbon have varying chemical affinities. Conduct thorough research on the contaminants you wish to remove. For instance, if you're dealing with chlorinated compounds, certain types of activated carbon can be more effective than others. Make sure to select a product that is compatible with your specific contaminants.
Some activated carbon products can be regenerated and reused, while others are intended for single use. If cost-effectiveness and sustainability are concerns, consider products that can be easily regenerated. Research the methods available for regeneration and determine if they fit your operational capabilities.
When selecting activated carbon, quality matters. Look for products that are certified by reputable organizations, such as NSF (National Sanitation Foundation) or AMS (American National Standards Institute). This ensures that the activated carbon meets specific performance and safety standards.
Activated carbon comes in various forms, including pellets, granules, and powders. Your choice depends on your application requirements:
- Charbon actif en granulés (GAC): Ideal for larger systems and long-term use.
- Powdered Activated Carbon (PAC): Suitable for applications requiring quick absorption.
- Extruded Activated Carbon: Often used in environments where low pressure drop and high flow rates are essential.
Choosing the right activated carbon is crucial to achieving optimum performance for your specific application. By considering factors such as application purpose, adsorption capacity, chemical compatibility, regeneration capabilities, quality certifications, and packaging, you can make an informed decision that meets your needs. With the right activated carbon, you can effectively remove impurities, enhance air and water quality, and promote a healthier environment.
Huamei Carbon has more than 20 years of experience in producing activated carbon. We produce granular activated carbon, pelletized activated carbon and powdered activated carbon from anthracite, bituminous coal, coconut shell and wood.
Our technicians and sales team will provide the best solution for your project. Since our company was founded, we have served more than 1000 customers and produced the most suitable activated carbon for their projects.
Due to the Philippines, Indonesia and other places of origin production of coconut shell raw materials to reduce, as well as shipping obstacles and other issues affecting the arrival of carbonised material, resulting in an increase in the price of raw materials.
First of all, thank you for your company's trust and support of our company, due to the price of raw material of charbon actif en coquille de noix de coco keep increasing, in line with the integrity of service, cooperation and win-win business philosophy, the company decided to do price adjustment, one ton increase 40-50usd based on original price per ton.
We hope that customers will understand and support this price adjustment, and we look forward to continuing cooperation with you, and wish you good luck.
