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Graphite ore can be divided into crystalline graphite, flake graphite and graphite ore with a variety of gangue. The graphite ore beneficiation process is mainly for the graphite ore with different crystal forms, such as graphite ore, pyrite or mica. It adopts multi-stage grinding multi-stage flotation and re-election flotation combined with two beneficiation processes.

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graphite ore flotation processing flow chart

Graphite is a kind of high-energy crystalline carbon material. Due to its unique structure and conductivity, thermal conductivity, lubrication, high temperature resistance and stable chemical properties, it has high application value in high performance materials. It is widely used in metallurgy, machinery, In the fields of environmental protection, chemical engineering, fire resistance, electronics, medicine, military industry and aerospace, it has become an indispensable non-metallic material for modern industry and the development of high, new and cutting-edge technologies

The flotation method is a relatively common method for purifying minerals. Since the graphite surface is not easily wetted by water, it has good floatability and is easily separated from impurity minerals. The flotation of graphite ore is generally carried out by positive flotation followed by reverse flotation of the flotation concentrate. A higher grade graphite concentrate can be obtained by flotation. Flotation graphite concentrate grades can usually reach 80% to 90%, using multi-stage grinding; the purity can reach 98%. The commonly used collectors for flotation crystal graphite are kerosene, diesel oil, heavy oil, sulfonate, sulfate, phenol and carboxylate. The common foaming agents are 2# oil, 4# oil, pine oil, ether alcohol and Butyl ether oil, etc., the adjusting agent is lime and sodium carbonate, and the inhibitors are water glass and lime. The common collector for flotation of cryptocrystalline graphite is coal tar. Commonly used foaming agents are eucalyptus oil and pine oil. The commonly used regulator is sodium carbonate. The commonly used inhibitors are water glass and sodium fluorosilicate

This graphite ore flotation plant including: (1) Preparation processing: first and second crushing, and coarse milling. (2) Flotation processing: rough separating, sweeping separating and fine separating. (3) Concentrates treatment: dewatering, drying, screening and packing. The raw ores are mainly flake graphite, gaugue minerals are calcite, chlorite, tremolite, plagioclase, garnet, kaolinite and etc. Flotation separation process with 4 stages of milling process and 5 times fine separating is adopted. The collecting agents are terpenol and triethoxy butane. Lime is used to adjust the PH value of the ore pulp to 8-9. In the raw ore, the grade is 4%-5%, but after this flotation separation process, the grade should be 89% and the recovery rate is about 80%. To get high purity graphite and high carbon graphite products, the fine concentrates should go through wet process chemical purification to reach the grade of 98%. (4)Amorphous graphite ore beneficiation processing. Amorphous graphite ores has high grade of 30%-90%, but due to the fineness of inserted graphite particles, it is difficult to improve the grade. Separating process is not needed when dealing with high grade graphite ore, and most graphite ores in China are with high grade. So the ore beneficiation process goes: raw ore-crushing process-milling process-flotation process-dewatering process-drying process-powder making process-classifying process and packing process. Cryptocrystalline graphite ore beneficiation process in Kayserberg, Austria includes the direct powder making dry process and flotation wet process. Its raw ores contains carbon of 30%-80%. In this flotation process, the coal oil is used as collecting agent, pain oil and flotation oil as foaming agent; PH value of ore pulp is 8, and the carbon content in the concentrates is 90%-92%; while the direct powder making dry process is for low carbon content graphite

graphite ore flotation processing flow chart

graphite beneficiation process- jxsc machine

Graphite ore is one of the minerals of elemental carbon crystal, has excellent properties such as lightweight, high-temperature resistance, thermal conductivity, electrical conductivity, lubrication, plasticity and chemical stability

Graphite is widely used in aerospace, new energy, medicine, information technology and high-end equipment manufacturing. Emerging industries such as energy conservation and environmental protection, the nuclear industry and new materials will become important strategic resources to support the future development of high and new technology.

Graphite flotation is commonly used for purifying graphite minerals. Because the graphite surface is not easily wetted by water, it has good floatability and is easy to separate from impurity minerals

graphite beneficiation process- jxsc machine

In China, the flotation method is basically used for graphite ore dressing. The flotation of graphite ore is generally carried out by positive flotation followed by reverse flotation of the flotation concentrate. A higher grade graphite concentrate can be obtained by flotation. Flotation graphite concentrate grades can usually reach 80%-90%, using multi-stage grinding, the purity can reach 98%

The commonly used collectors for flotation crystal graphite are kerosene, diesel oil, heavy oil, sulfonate, sulfate, phenol and carboxylate. The common foaming agents are 2# oil, 4# oil, pine oil, ether alcohol and Butyl ether oil, etc., the adjusting agent is lime and sodium carbonate, and the inhibitors are water glass and lime

The commonly used collector for the flotation of cryptocrystalline graphite is coal tar. Commonly used foaming agents are eucalyptus oil and pine oil. The commonly used regulator is sodium carbonate. The commonly used inhibitors are water glass and sodium fluorosilicate. Flotation agent preparation method

graphite beneficiation process- jxsc machine

There are three forms of multi-stage processes, namely re-grinding of concentrates, re-grinding of mines and re-grinding of tailings. Crystalline graphite is mostly used in the re-grinding process of concentrates. Under normal circumstances, the recovery rate of mineral processing operations can reach about 80%. Some mines have also tried the re-grinding process in the mine, but the effect is not obvious

(1) Shangdong South Villa Graphite Mine. The mine is located in Laixi County, Shandong Province, producing flake graphite. The ore processing capacity of the ore dressing plant is about 350,000 t/a, the original ore size is -450 mm, the grinding grain size is -15 mm, and the selected grain size is -0.15 mm, accounting for 60%-65%. The ore grade is 4.39%-4.45%, the concentrate grade is 88%-89%, the recovery rate is about 80%, and the tailings grade is 0.6%-0.8%. The flotation concentrate is purified by the alkali-acid method, and the final graphite concentrate grade is 98%-99%, and the operation recovery rate is 88%. (2) Inner Mongolia Xinghe Graphite Mine. The two plants have an annual processing capacity of 300,000 tons of raw ore and a graphite output of about 7,000 tons. The original ore size is -350mm, the grinding particle size is -10mm, and the selected particle size is -0.15mm, accounting for 38%. The ore grade is 3.82%-4.07%, the concentrate grade is about 88%, the tailings grade is 1.34%-1.68%, and the recovery rate is about 68%. Flotation concentrates can be chemically purified to a grade of 94% to 99.5%. (3) Heilongjiang Liumao graphite mine. The mine produces flake graphite. The original ore size is -550mm, the grinding grain size is -20mm, the selected grain size is -100 mesh, 70%, the ore grade is 14%-16%, and the graphite coarse concentrate after flotation is re-grinded 5 times and 6 times. The selected and medium-concentrated concentrates are returned to the rough grinding circuit, and the obtained concentrate grade is 93%-95%, the tailings grade is 3%-4%, and the ore dressing recovery rate is about 75%. (4) Hunan Lutang graphite mine. The mine produces cryptocrystalline graphite. The ore grade is 65%-68%, the particle size is -250mm, and it is fine-grained. The graphite processing flow is relatively simple, and is mainly composed of processes such as hand selection, coarse crushing, screening, medium crushing, drying, grinding, and classification. The graphite ore processing capacity of the ore dressing plant is about 60,000 t/d, and the grinding grain size is -40 mm. The hand-selected concentrate grade is 70%-88%, the hand-selected tailings grade is less than 60%, and the ore dressing recovery rate is 90%

JXSC shares graphite beneficiation processing flowsheet and graphite plant design diagram. Graphite purification process research has a good effect of other mineral beneficiation like chromite mining process. contact us to know the crusher machine price and flotation price and so on mining equipment

graphite beneficiation process- jxsc machine

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