Huamei Activated Carbon received the following email from a metallurgist in Burkina Faso gold mine in 2024/11/08 asking for help:

Hello Sir! I read your article on the properties of high quality activated carbon. I am a metallurgist at a mine in Burkina Faso and we are currently experiencing serious problems with an activated coal used for gold adsorption. This carbon has a very low density and is not homogeneous in the leaching reactor. When we measure the carbon concentration in the slurry, it is always higher than we should expect. We had to mix two types of coal in the reactor, one HAYCARB and the other CO-PROCHIM, the latter being a local activated carbon and the other an imported one. As far as gold adsorption efficiency is concerned, the latter has a lower density and all the activated carbon floats on the surface, resulting in a decrease in gold adsorption activity. I would like to get some suggestions. Our treatment process is CIL and gravity method.

In response to the customer's question, Huamei carbon's technical team made a careful analysis and gave friendly advice as follows:

CO-PROCHIM activated carbon's floats on the surface in the leaching reactor, which reduces the contact efficiency with the slurry and thus affects the gold adsorption efficiency. In order to solve this problem, the following aspects can be optimised:

1. Ratio and optimisation of HAYCARB and CO-PROCHIM mixed carbon

a. Adjust the mixing ratio of carbon appropriately

Enhance the proportion of HAYCARB: According to your description, increasing the proportion of HAYCARB in the mixture may improve the adsorption effect. It is recommended that you find the optimal ratio by first testing it in small-scale experiments and gradually increasing the proportion of HAYCARB (e.g. 70% HAYCARB + 30% CO-PROCHIM).
Adjust the ratio according to the mineral composition: different minerals have different reactivity, you can further optimise the mixing ratio according to the type of ore, the pH value of the slurry and the leaching rate of gold to ensure the optimal adsorption rate of gold.

b. Mixing method and agitation of activated carbon

Uniformity: Use suitable mechanical mixing equipment to ensure that CO-PROCHIM and HAYCARB can be evenly distributed in the slurry, to avoid CO-PROCHIM activated carbon gathering on the surface.
Adjustment of mixing rate: Increase the mixing rate or install specific mixers to ensure better distribution of activated carbon in the slurry.

2. CIL process optimisation

a. Optimisation of the leaching reactor design

Ensure a balance between flow rate, agitation and char mobility in the CIL reactor to prevent char particles from accumulating in the reactor. Reactors with agitation or agitation tower design can be used to enhance the contact between the char and the slurry.
Dividing the CIL leaching process into multiple stages, using different char concentrations and agitation rates for each stage, may help to improve leaching and gold recovery.

b. Ensure that the contact time between the activated carbon and the gold ore slurry is sufficient during the leaching process. At the same time, increase the temperature and slurry concentration appropriately during the adsorption process to improve the adsorption efficiency of gold.

3. Optimisation of activated carbon

Raw material selection of activated carbon: During the production process, heavier raw material coconut shell is needed to increase the quality and density of carbon.
Adjustment of production process: The problem of low density of CO-PROCHIM activated carbon may originate from its sintering process. The activation temperature of the charcoal can be increased or the activation activity can be changed to increase the density of the activated charcoal. The activation temperature affects the pore structure and density of the carbon and needs to be strictly regulated.
Optimisation of particle size distribution and particle morphology: Low-density chars tend to have smaller pore sizes, which may cause them to float to the surface in leach reactors. The settling properties can be enhanced by adjusting the particle size distribution of the particles, especially by increasing the proportion of particles.
For gold recovery, choosing the right activated carbon is crucial. If the quality of the carbon is poor, not only will it be ineffective, but it will also lead to gold loss, which will result in significant losses.

Huamei Activated Carbon Company is a professional manufacturer of coconut shell activated carbon with more than 50 stable cooperation customers in the field of gold refining in Egypt, Sudan, Libya, Tanzania, Burkina Faso, Ghana, Turkey, Uzbekistan, Hong Kong, Kyrgyzstan and other countries. Huamei Activated Carbon has been well received, if you need activated carbon, please feel free to contact us!

We all know that formaldehyde is very harmful to our human body, so we must adsorb formaldehyde before moving into a new house. There are many ways to absorb activated carbon, which is one of the methods of activated carbon adsorption, but activated carbon is actually divided into a variety of activated carbon absorption of formaldehyde useful? As well as the absorption of activated carbon that effect is better?

Activated Carbon In Addition To Formaldehyde Useful

1. Activated carbon is mainly used to adsorb formaldehyde and other harmful gases, filtering out insoluble, adsorption of some soluble. Activated carbon composition is mainly the use of charcoal, a variety of shells and coal as raw materials, through physical and chemical methods of raw materials for crushing, sieving, catalyst activation, rinsing, drying and screening and a series of processes and manufacturing. It has a strong physical adsorption and chemical adsorption effect, which can adsorb certain organic compounds to achieve the removal effect. 2.

2. Activated carbon can adsorb formaldehyde, ammonia, benzene, xylene, radon and other indoor harmful gas molecules in the air, for the living room, furniture closet, bookcases, shoe cabinets, shoes, refrigerators, bathrooms, floors, fish tanks, automobiles, air conditioning, computers, hotels and entertainment venues, have a very good effect, can be effective in adsorption of harmful gases such as formaldehyde, filtering out the insoluble, adsorption of some soluble. Therefore, together with gas catalyst and other chemical treatment methods, they are used as household formaldehyde removal and indoor air purification.

3. Role of Granular Activated Carbon (GAC)

Granular activated carbon (GAC), the smaller the particles, the better the adsorption effect, but the resistance is larger, also easy to leak carbon. Therefore, water purifier manufacturers generally choose moderate particles of carbon particles, generally between 10 to 24 mesh, small water purifiers choose 16 to 32 mesh. And granular activated carbon is more suitable for use in the refrigerator odor adsorption or car wash and other small-scale use.

Which Type Of Activated Carbon Is Effective In Removing Formaldehyde

Activated carbon can be divided into wood activated carbon, shell activated carbon, mineral raw material activated carbon, synthetic resin activated carbon, regeneration activated carbon and so on. We commonly use the following types of activated carbon.

1. Mineral raw material activated carbon

Mineral raw material activated carbon is mainly composed of live ores, which are mainly derived from the mining areas. The raw materials are screened and added with seafoam and bumpy soil, which greatly improves the adsorption performance of activated carbon.

2. Coconut shell carbon

Coconut shell activated carbon is mainly made from coconut shells from Hainan and Southeast Asia as raw materials, which are then screened, carbonized with water vapor and refined, and then made through a series of processes, such as removing impurities, activation and sieving. Coconut shell activated carbon is black granular, with developed pore structure and adsorption capacity, high strength, chemical stability, and long service life. Widely used in pure water, industrial water, drinking water, food and beverage, oil and power depth purification and refining of precious metals, with decolorization and deodorization, adsorption and removal of turbidity, and then zeolite, molecular sieve to use the effect is better.

3. Fruit shell carbon

Fruit shell carbon is mainly made of wood chips and fruit shells, and then carbonized, activated, processed, fruit shell carbon has a large surface area, high strength, developed pore structure, strong adsorption performance, and can effectively adsorb organic pollution and organic solvents in the water, applicable to pharmaceutical, petrochemical, sugar, beverage and other purification industries.

4. Wooden carbon

Wooden activated carbon is made of wood as raw material, which is in the form of powder, and processed through high temperature carbonization, activation and other processes, with large surface area, high activity, developed microporous, strong decolorization force and large pore structure, which can effectively adsorb colorful substances and impurities in the liquid.

The quality of activated carbon produced by Huamei is reliable and has a certain degree of competitiveness in the international market, with a stable export business. Welcome to contact us to get the price of different types of activated carbon products.

As we all know, Norit activated carbon (now acquired by cabot) is a very well-known activated carbon supplier. They produce activated carbon used in various industries, such as food and beverage, petrochemical, water treatment, air purification, gold extraction, nickel mining and other fields. Norit has excelled in activated carbon production technology and application. Well recognized by the majority of customers, but because of norit activated carbon price is high , many customers want to find more cost-effective products to replace, Huamei activated Carbon, one of the top 10 activated carbon manufacturers in China, is a good choice.
Huamei activated carbon factory is one of the top 10 well-known brands in China, rapidly occupying the market with the concept of small profits and quick sales. Here are the popular models of CABOT (also known as NORIT) for your reference.

1. SORBONORIT 4 & SORBONORIT B3

SORBONORIT 4 & SORBONORIT B3 is a steam activated extruded carbon with a diameter of 4 mm. It is carbon with superior mechanical hardness that is excellent for solvent recovery applications. It is used in solvent recovery applications where the concentration of solvent is high or in critical applications where the highest working capacity is required.
Huamei activated carbon can provide similar columnar activated carbon HMEAC600 & HME-C80, which has the advantages of a long service life and a low price.

2. NORIT ROW 0.8 SUPRA

NORIT ROW 0.8 SUPRA extruded activated carbon is an extruded activated carbon,which offers superior adsorption properties in a wide range of applications such aspurification of (potable) water. Its dedicated pore size distribution makes NORIT ROW 0.8 SUPRA extruded activated carbon highly suitable for the removal of taste and odour, organic micro pollutants such as pesticides, other dissolved organic substances, chlorine and ozone. Its superior hardness makes NORIT ROW 0.8 SUPRA extruded activated carbon particularly suited for thermal reactivation.
Huamei activated carbon can provide similar pellet activated carbon HME-AC series.

3. Norit RB 1.5

Norit RB 1.5 is a steam activated extruded granular carbon with a particle diameter of 1.5 mm. Norit RB 1.5 is an excellent carbon type for the removal of low concentrations of contamination in gas flows.
Huamei activated carbon can provide similar pellet activated carbon HME-AC series.

4. NORIT PK 3-5

NORIT PK 3-5 granular activated carbon is a highly macro porous granular activated carbon, which can be used in a broad range of gas and liquid phase applications. NORIT PK 3-5 granular activated carbon is allowing low weight gas filter design and suitable for oil removal from compressed air and condensate. NORIT PK 3-5 granular activated carbon is produced by steam activation from renewable raw materials.
Huamei activated carbon can provide similar granular activated carbon gac. This product has a high methylene blue value.

5. NORITHENE filter plates

NORITHENE filter plates offer a simple and effective solution to indoor air purification and acid gas removal. Whether you are looking to remove hazardous impurities from a laboratory, install a dust free purification system in a large airport, or want a high performance and reliable purifier for your home filtration system, the NORITHENE filter plate is the perfect choice.
The NORITHENE filter plate has an excellent reputation for optimal performance in air and acid gas applications.
Huamei Activated carbon manufacturer can provide similar filter plates

6. NORIT RO 3515/ NORIT RO 3520 /NORIT GCN

NORIT RO 3515/ NORIT RO 3520 activated carbon is extruded activated carbon for gold recovery. NORIT GCN is granular activated carbon for gold recovery.
Huamei Activated carbon can provide similar 2mm & 1.5mm pellet activated carbon & coconuts shell base granular activated carbon for gold recovery HMGOLD series

7. Norit activated carbon GAC series

Norit GAC 1240 W（Norit GAC 1240）& Norit GAC 830 W（Norit GAC 830） is a granular activated carbon, which is suitable in a wide range ofapplications such as purification of (potable) water and industrial process liquids.
Huamei Activated carbon can provide similar coal base activated carbon & coconut shell base granular activated carbon for water treatment HMG-BC series & HMG-CS series.

As we all know, calgon carbon kuraray company is one of the world's well-known activated carbon brands. There are several popular models of Calgon activated carbon that are well recognized by customers and are widely used in the water treatment industry, air purification industry, food and beverage industry, gold refining industry, petrochemical industry, etc., but Because its price is very high, many customers want to find a more cost-effective alternative. Huamei activated carbon is a good choice. Fábrica de carvão ativado de Huamei is one of the well-known activated carbon brands in China, quickly occupying the market with stable quality, efficient service and cheap prices. Below is a comparison of Calgon’s popular models with beautiful models for your reference.

Comparison Of Popular Models Of Granular Activated Carbon

Calgon activated carbon: FILTRASORB® 400, CENTAUR® 12x40, AT 4x10, OLC 12x30, CAL 12x40, 208C, SGL 8x30, Gold Plus, DG, GRC, GOLDCARB, VPR 4x10, DSR C 8x30, DSR A 8x40, RVG-G, HGR 4x10, TOG NDS 20X50 GAC
Huamei activated carbon: HMG-BC900, HMG-BC1000, HMG-BC800, HMG-CS1000, HMGOLD Series, HMC-AW, HMG-AY950, HMG-A500, HM-GM830

Comparison Of Popular Models Of Columnar Activated Carbon

Calgon Activated Carbon: AP 4-60, Minotaur, HGR-P, ST 1 X, WS-380, WS-480, WS-465-AWD
Huamei activated carbon: HMKOH460, HMEAC600, HME-AC Series, HME-C80, HMS-PZ20, HMCUO460, HME-AY55, HM-PSA25

Comparison Of Popular Models Of Powdered Activated Carbon

Calgon Activated Carbon: WPC, WPH, WPX, PLUSSORB, GW, TOG, OLC, CENTAUR, PWA, RB, BG HHM, PULSORB, Fluepac, Acticarbone Activated Wood Carbon, BL, PWA, CPG
Huamei carvão ativado em pó: HMP-WS200, HMPAC220, HMPAC-W, HMP-BSW

After years of R&D and sales, the Huamei activated carbon brand has accumulated rich application experience. It can provide customers with professional product suggestions and technical support, saving customers more purchasing costs. If you want the same quality as Calgon activated carbon , cheaper price, welcome to contact us Huamei Activated Carbon to get a quote.

Jacobi Carbons is a leading global manufacturer and supplier of activated carbon, headquartered in the Netherlands. Founded in 1916, the company is committed to providing high quality activated carbon and related services that are widely evaluated in the water treatment, air purification, food and beverage, chemical, and oil and gas industries. Jacobi carbons includes granular activated carbon, extruded activated carbon and powdered activated carbon to meet the needs of different customers.

Huamei Carbons is a reliable manufacturer of activated carbon in China with more than 20 years of production and R&D experience in the field of activated carbon, which can provide customers with high quality activated carbon all kinds of products, effective solutions and excellent services.

Model of Jacobi Carbon and Huamei Carbon for Different Applications

Below are the recommended models of Jacobi Carbon and Huamei Carbon for different applications:

Huamei Carbons is a proud Chinese company that is a leader in the production, sales and research of activated carbon. We provide a wide range of services to customers in many industries, including food and beverage, gold mining, wine, chemical, drinking water, air filtration and more.

If you would like to get data sheet of activated carbon, price information, and free samples, please feel free to contact us!

 

As the international situation changes, Russia's import business becomes more and more restrictive. Many Russian companies have turned to importing various products from China, and activated carbon is one of them.

So how to import activated carbon from China to Russia?

First of all, you need to conduct research on the activated carbon demanded by the Russian market. According to surveys, in the activated carbon industry, the most imported activated carbon products in Russia are carvão ativado de casca de coco used in the gold refining industry, coal-based columnar activated carbon used in the petrochemical industry, and wood powder activated carbon used in the food and beverage industry.

Next you need to pick a suitable activated carbon supplier in China. The export business focus of Huamei Activated Carbon Factory has gradually shifted to Russia. And provide the Russian market with cheaper prices to expand market share. Huamei Activated Carbon is committed to providing Russian customers with cheaper activated carbon and higher quality and stable activated carbon.

Then you need to find a professional shipping agent. There are usually 3 transportation methods from China to Russia, sea transportation, truck transportation and rail transportation. Since carvão ativado is a sensitive product, many transportation companies do not accept activated carbon transportation. Huamei Activated Carbon has many years of export experience and has cooperated with many freight forwarders who have rich experience in exporting to Russia. If you have questions about transportation to Russia, please contact our professional business manager of Huamei Activated Carbon for detailed answers.

Finally, you need to pay the money safely to China. Payment for goods from Russia is also a headache for many companies. Huamei Activated Carbon has a variety of payment channels to choose from. Welcome to contact us to learn more.

Fábrica de carvão ativado de Huamei is the famous coconut shell activated carbon supplier and coal-based activated carbon supplier. Its regular products include 4mm activated carbon pellets, granulated activated carbon, and activated carbon powder. The activated carbon price is obviously competitive in the market. Welcome to contact our business manager for inquiry.