Graphite beneficiation process flow

Graphite beneficiation process flowComplete equipment configuration

Hubei crusher, hydraulic cone crusher/hammer crusher, ball mill, SF flotation machine/XJK flotation machine, dewatering screen, spiral classifier, dryer, etc

Graphite beneficiation process flow Device image

Graphite beneficiation process flow introduce

1、 Process Introduction

The graphite beneficiation process generally adopts processes such as coarse crushing, medium crushing, fine crushing, grinding, flotation, dehydration, and drying. Jaw crushers are often used for coarse crushing. Hydraulic cone crushers and hammer crushers are commonly used for medium and fine crushing. The grinding operation uses lattice ball mills and other grinding equipment. SF flotation machines and XJK flotation machines are commonly used for flotation. Dehydration often uses dewatering screens, various centrifugal dewatering machines, and filters. Spiral classifiers are often used for grading, which can effectively classify graphite. Dryers are commonly used for drying.

2、 Mineral processing process flow of crystal graphite ore

Because the hardness of graphite ore is generally medium hard or slightly soft, and the grade is generally between 2% and 10%, the crushing process is relatively simple, usually using a three stage open circuit, two stage open circuit, or one stage crushing process. Small and medium-sized mines process weathered mines and directly feed them into ball mills without crushing. The flotation process of graphite ore beneficiation generally adopts a closed circuit process of multi-stage grinding, multi-stage beneficiation, and sequential (or concentrated) return of intermediate ore. There are three forms of multiple processes, namely concentrate regrinding, intermediate ore regrinding, and tailings regrinding. Crystal graphite mostly uses concentrate regrinding technology, and the recovery rate of general beneficiation operations can reach about 80%. Some mines have also tried the intermediate ore regrinding process, but the effect is not significant. Some small factories also use open circuit or semi open circuit flotation processes because there are too many abandoned tailings points. The recovery rate of mineral processing is very low, usually only 40%~50%.

3、 Mineral processing methods for cryptocrystalline graphite ore

The grade of cryptocrystalline graphite ore is high, but sorting is difficult. In China, usually mined graphite ore is floated after simple screening. The mineral processing methods of cryptocrystalline graphite ore include flotation, electric separation, gravity separation, etc. The flotation method is the most widely used method for the beneficiation of cryptocrystalline graphite ore.

Scale graphite has good flotation performance, therefore, most graphite ore production line flotation methods are used for separation. When using flotation agents, kerosene or diesel oil is generally used as the collector in China, and No. 2 oil or new flotation oil is used as the foaming agent. After years of production practice, No. 4 oil is considered an ideal foaming agent for graphite ore production lines. In foreign countries, in addition to the use of the aforementioned drugs, there are also other drugs, such as heavy oil, petroleum, phenols, sulfonates or sulfates, carboxylates, etc. Sometimes several medications can be mixed.

4、 Characteristics

1. The new technology for graphite ore beneficiation has a high-end configuration, a compact and reasonable layout, and a minimal total floor area, greatly saving civil engineering investment.

2. The new technology for graphite ore beneficiation has a high degree of automation and can be remotely controlled by computers, resulting in lower investment costs in terms of manpower and material resources.

3. The new technology of graphite ore beneficiation is safer and more stable in operation, with an ultra-low failure rate, which can save a lot of maintenance costs, free from dust and noise, and does not damage the environment.

4. The concentrate grade obtained by the new technology of graphite ore beneficiation has increased by 10 percentage points, greatly improving the industrial value of graphite mineral materials and significantly improving the comprehensive recovery rate.

Graphite beneficiation process flow