Quartz Sand Beneficiation Solution: Innovative Process for Efficient Impurity Removal and Deep Purification

As an important industrial raw material, the purity of quartz sand directly affects the application value of the product. This quartz sand beneficiation solution mainly focuses on the specialized beneficiation process for common glass sand and photovoltaic glass sand, including the core technologies of scrubbing and grading, re-election and separation, magnetic separation and purification, flotation and impurity removal, as well as the configuration of the supporting equipment and technological advantages, to provide a comprehensive solution for the high-efficiency purification of quartz sand resources.

I. Characteristics and challenges of quartz sand beneficiation

Quartz sand beneficiation faces the following technical challenges:

• Variety of impurities: containing iron, aluminum, titanium, chromium and other impurity elements, the removal of difficult

• Strict purity requirements: sand for photovoltaic glass requires Fe₂O₃≤0.001%, which requires extremely high purity.

• Fine particle size control: precise control of particle size distribution is required to meet the needs of different applications.

• Strict environmental requirements: need to adopt environmentally friendly process, reduce the use of chemicals and pollution emissions

Second, the core quartz sand beneficiation process program

1. Basic physical sorting system (common glass sand)

• Scrubbing and grading process: rod mill scrubber + spiral classifier, removing surface film iron and clay minerals.

• Re-election separation process: spiral chute with one coarse and one fine, effectively removing heavy mineral impurities.

• Magnetic separation and purification process: high gradient magnetic separator with two stages to remove magnetic iron.

• Dewatering and drying process: dewatering screen + drying system to produce qualified products.

Technical index:

• SiO₂: 98.61-99.33%

• Fe₂O₃: ≤0.01%.

2. Deep purification system (photovoltaic glass sand)

• Flotation system: remove light impurities such as aluminum, sodium, potassium, etc., using environmentally friendly chemicals.

• Acid leaching system: mixed acid leaching tanks, in-depth removal of titanium, chromium and other trace impurities

• Ultra-fine grinding system: ceramic ball mill, precise control of product particle size

• Washing system: multi-stage counter-current washing to ensure product purity.

Upgrade index:

• SiO₂: ≥99.3-99.9%

• Fe₂O₃: ≤0.001%

• Al₂O₃: ≤0.01%

Third, quartz sand beneficiation production line key equipment configuration

Four, quartz sand production line configuration program

Scheme A: common glass sand production line

• Investment focus: scrubbing + magnetic separation system

• Core equipment:

  • Scrubbing and grading unit (including waste water recycling system)

  • High gradient magnetic separation unit

  • Dewatering and drying system

• Applicable products: general glass sand, casting sand

Scheme B: Photovoltaic glass sand production line

• Investment focus: Flotation + acid leaching system

• Core equipment:

  • Full series of physical sorting equipment

  • Automatic dosing system for flotation chemicals

  • Acid mist treatment and recovery device

• Environmental protection supporting:

  • Wastewater treatment system

  • Exhaust gas scrubber

• Applicable products: photovoltaic glass sand, high purity quartz sand

V. Advantages of quartz sand beneficiation technology

1. Advanced technology

• Highly efficient impurity removal capacity: Fe₂O₃ content can be reduced to below 0.001%.

• Precise grading control: uniform particle size distribution to meet the needs of high-end applications.

• Strong adaptability: can handle different grades of quartz sand raw materials.

2. Remarkable economic benefits

• High return on investment: reasonable equipment selection, low investment cost.

• Optimization of operation cost: low energy consumption and pharmaceutical consumption, comprehensive cost reduction.

• High value-added products: high purity quartz sand can be produced to enhance the value of products.

3. Outstanding environmental advantages

• Physical sorting: reduce the use of chemicals.

• Wastewater recycling: water recycling rate of more than 85%, saving water resources.

• Perfect waste gas treatment: acid mist recycling and treatment, meet the standard emission.

Sixth, professional and technical services

1. Experimental research services

• Ore testing and analysis: analyze the chemical composition and mineral composition of quartz sand in detail.

• Process test research: determine the best process flow and parameters

• Pilot test: Conduct continuous expansion test to verify the feasibility of the process.

2. Engineering design services

• Process design: customize the quartz sand beneficiation process.

• Production Line Layout: Reasonable equipment layout and plant design

• Automation control design: realize intelligent control of the production process.

3. Equipment supply service

• Equipment Selection Recommendation: Select the best equipment according to the characteristics of raw materials.

• Equipment Manufacturing Supply: Provide high quality key equipment

• Spare parts supply guarantee: ensure the continuous and stable operation of the production line.

4. Engineering construction services

• Installation guidance: professional technical team on-site installation guidance

• Commissioning service: production line commissioning and process optimization

• Technical training: systematic training for operation and maintenance personnel

Application Cases

Case 1: Jiangsu a common glass sand project

• Raw material: SiO₂ content 96.5%, Fe₂O₃ content 0.15%.

• Process: scrubbing + magnetic separation process

• Production index: 99.2% SiO₂, 0.008% Fe₂O₃.

Case 2: a photovoltaic glass sand project in Anhui

• Raw material: SiO₂ content 98.2%, Fe₂O₃ content 0.025%.

• Process: flotation + acid leaching depth purification process

• Production index: 99.8% SiO₂, 0.0008% Fe₂O₃.

Quartz sand beneficiation is a technology-intensive systematic project, which requires individualized solutions according to the characteristics of raw materials and product requirements. Our quartz sand beneficiation solutions are tailored to the different quality requirements of common glass sand and photovoltaic glass sand, using advanced scrubbing, magnetic separation, flotation and acid leaching processes, and equipped with energy-efficient equipment, to ensure that the quartz sand products meet the required purity standards.

We provide the whole process service from experimental research, engineering design, equipment supply to installation and commissioning to ensure that our customers get the best technical indexes and economic benefits. Specific quartz sand beneficiation solution parameters need to be determined according to the nature of the raw material test, it is recommended to carry out beneficiation test research.

Welcome to inquire for more technical information and personalized program design, our professional and technical team will provide you with the best quartz sand beneficiation solutions.