Graphite Beneficiation Solutions: Innovative Processes for High Efficiency Purification and Scale Protection

As an important strategic non-metallic mineral, the beneficiation process of graphite is directly related to the application value of the final product. This graphite beneficiation solution introduces three kinds of high-efficiency graphite beneficiation process: traditional flotation method, re-election-flotation combined method and innovative multi-stage milling process, and analyzes in detail the characteristics of each process, equipment configuration and technical advantages, to provide a comprehensive solution for the efficient development and utilization of graphite ore.

I. Characteristics and challenges of graphite beneficiation

Graphite beneficiation faces the following technical challenges:

• Scale protection demand: large scale graphite is of high value, need to maximize the protection of scale structure

• Large grade fluctuation: the fixed carbon content of the raw ore varies from 3% to 15%, which requires differentiated treatment.

• Multiple impurities: often accompanied by mica, pyrite, quartz and other impurity minerals

• High application requirements: lithium battery anode materials and other high-end applications require high purity.

Second, the core graphite beneficiation process program

1. Leading flotation process

• Applicable ores: Crystalline graphite ore with fixed carbon content above 5%.

• Process flow: three-stage crushing - two-stage grinding - roughing - nine-stage selection - three-stage sweeping

• Pharmaceutical system: Kerosene/diesel oil composite trapping agent + modified alcohol foaming agent

• Technical index: concentrate grade ≥92%, recovery rate 85-92

• Innovative technology: low-speed grinding technology + stepped concentration control, scale breakage rate <5%.

2. Combined re-election-flotation process

• Applicable o res: complex ores with heavy minerals such as pyrite and so on.

• Process flow: jigger pre-selection + five-stage selection flotation

• Technical advantage: comprehensive recovery rate increased by more than 15%, suitable for fixed carbon content of 5-8% of the low-grade ores

• Application Case: A graphite mine in Jiangxi Province has increased the annual processing capacity to 300,000 tons and reduced the cost of concentrate by 22%.

3. Multi-stage grinding process

• Process: nine progressive grinding + "1 coarse, 1 sweep, 9 concentrate" flotation process

• Technical Advantage:

  • Specialized scales protect the mill speed by 30%.

  • Ultrasonic assisted dissociation system

  • Intelligent dosing control, saving 18% of the cost of ton of ore chemicals.

• Application effect: 92.3% fixed carbon in concentrate, 87.9% recovery rate

Third, graphite beneficiation production line core equipment configuration

Graphite beneficiation technology advantages

1. Advantages of flotation process

• High selective separation: precisely separating graphite and vein minerals.

• Perfect protection of scales: special equipment and technology maximize the protection of large scales.

• Strong adaptability: it can process different grades and types of graphite ores.

2. Advantages of combined process

• High overall recovery rate: Re-election and pre-election increase the overall recovery rate.

• Remarkable cost-effectiveness: operating costs are reduced by more than 20%.

• Excellent environmental performance: Reduce the amount of chemicals, reduce the environmental impact.

3. Advantages of multi-stage milling process

• Stable product quality: stabilized concentrate grade of over 92%.

• High degree of automation: intelligent control system ensures stable production

• Advanced energy consumption index: reduce the comprehensive energy consumption by 15-20%.

V. Production guarantee system

1. Experimental research service

• Ore process mineralogy research

• Graphite scale distribution and dissociation characteristics analysis

• Laboratory beneficiation test and expansion test

2. Customized program design

• Adaptation of the process flow to the nature of the ore

• Processing scale from 50t/d to 10,000t/d can be adapted.

• Provide personalized equipment configuration plan

3. Engineering services

• Plant planning and site drawing design

• Equipment selection and supply

• Installation and commissioning and technical guidance

4. Environmental solutions

• Tailings to building materials technology

• Wastewater recycling system

• Meet the requirements of green mines

Application Cases

Case 1: A large-scale flake graphite mine in Heilongjiang province

• Properties of raw ore: fixed carbon content of 7.2%, high content of large flakes

• Adopted process: flotation dominated process + scale protection technology

• Production index: concentrate grade 95.2%, recovery 89.5%, +80 mesh scale retention rate of 82

Case 2: A cryptocrystalline graphite mine in Shandong Province

• Properties of raw ore: fixed carbon content of 12.5%, fine embedded particle size

• Process: Multi-stage grinding process + ultrasonic dissociation

• Production index: 94.8% concentrate grade, 91.2% recovery rate

With the rapid development of new energy industry, the market demand for high quality graphite concentrates continues to grow. Our graphite beneficiation solution not only inherits the maturity and reliability of the traditional flotation process, but also makes it possible to economically and efficiently develop and utilize the low-grade and difficult-to-metallurgical graphite resources through the technological innovations of reelection pre-selection and multi-stage grinding.

Whether it is flake graphite or cryptocrystalline graphite, we can provide the whole process service from experimental research to standardization and production, including:

• Ore selectivity test study

• Process design and optimization

• Equipment selection and configuration program

• Engineering installation and technical guidance

• Production commissioning and personnel training

Welcome to ask for detailed graphite beneficiation solutions or consulting technical services, our team of engineers will customize the most economical graphite beneficiation production line configuration and quotation for you.