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Method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz

A high-purity quartz sand and magnetite technology, applied in the direction of solid separation, etc., can solve the problems of waste of by-products and tailings, waste of resources, and increase of production costs of enterprises, so as to avoid secondary pollution, ensure quality requirements, and be economical. and the effect of social benefits

Inactive Publication Date: 2020-04-10
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, my country's high-purity quartz sand enterprises have imported a large amount of high-quality quartz raw materials to produce high-purity quartz sand. The finished product rate of high-purity sand is only 60%, and nearly 40% of by-products and tailings are wasted, resulting in an extreme waste of resources. Big waste, increasing the production cost of the enterprise

Method used

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  • Method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz
  • Method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz
  • Method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz

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Experimental program
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Effect test

Embodiment 1

[0033] Granular quartz is selected from a foreign country. The quartz particles are cemented. The average size of the quartz particles is about 1-2mm. The appearance is dark brown. The main minerals are quartz, magnetite, ilmenite, and a small amount of feldspar, mica, etc. .

[0034] A method for preparing high-purity quartz sand iron concentrate with magnetite associated granular quartz provided by the invention, see figure 1 , take the following steps:

[0035] (1) Add water to the granular quartz and enter the ball mill for grinding, the pulp concentration is 60%, and the hourly processing capacity is 30t / h;

[0036] (2) The grinding product passes through a 0.2mm high-frequency vibrating screen, and the screened material is returned for regrinding;

[0037] (3) The 0.2mm minerals under the sieve pass through two spiral chutes to obtain the gravity-selected concentrate; the gravity-selected tailings are quartz particles containing ilmenite, magnetite and iron-coated, and...

Embodiment 2

[0047] Granular quartz is selected from pegmatite veins in a certain place in China. Granular quartz particles are cemented and gray in appearance. The main minerals are quartz, magnetite, garnet, biotite, ilmenite, rutile, zircon, etc.

[0048] see figure 1 , using the following beneficiation steps:

[0049] (1) Add water to the granular quartz and enter the ball mill for grinding, the pulp concentration is 50%, and the processing capacity is 20t / h;

[0050] (2) The grinding product passes through a 0.15mm high-frequency vibrating screen, and the on-screen material is returned for regrinding;

[0051] (3) The underscreen is passed through three spiral chutes to obtain gravity-selected fine sand, and the gravity-selected tailings are rutile, zircon, ilmenite, garnet, magnetite and iron-coated quartz particles, and enter the step ( 8);

[0052] (4) Gravity-selected concentrated sand (quartz) undergoes a medium magnetic induction intensity of 0.5T and a strong magnetic induct...

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Abstract

The invention relates to a method for preparing high-purity quartz sand iron ore concentrate from magnetite associated granular quartz. The method comprises the following steps of, grinding and screening granular quartz, returning oversize products for regrinding, and carrying out gravity separation on undersize products to remove heavy minerals; carrying out medium magnetism and strong magnetismon the gravity separation fine sand to obtain magnetic minerals and non-magnetic quartz minerals; removing fine particles and mud of quartz through grading and desliming, taking graded fine sand as anelectrical and electronic grade silica micropowder raw material, and removing non-quartz particles of graded settled sand through flotation; carrying out "calcination, water quenching, acid leaching,cleaning and drying" on the flotation fine sand to obtain the high-purity quartz sand; carrying out ball milling and magnetic separation on gravity separation tailings and magnetic separation magnetic minerals to obtain high-grade iron ore concentrate; and using tailing mud and tailing sand generated in the ore dressing process as a novel building material raw material. According to the method, comprehensive utilization of resources can be achieved, and good economic, social and environment-friendly benefits are achieved.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of quartz processing, and in particular relates to a method for preparing high-purity quartz sand-iron concentrate from magnetite-associated granular quartz. [0002] technical background [0003] High-purity quartz sand is an indispensable raw material in high-tech fields such as electronic information, aviation, aerospace, and military industry, and has a pivotal strategic position. With the rapid development of my country's high-tech field, the demand for high-purity quartz sand is increasing, and the product quality and price are getting higher and higher. In recent years, my country's high-purity quartz sand enterprises have imported a large amount of high-quality quartz raw materials to produce high-purity quartz sand. The finished product rate of high-purity sand is only 60%, and nearly 40% of by-products and tailings are wasted, resulting in an extreme waste of resources. Big waste ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 彭寿尚德兴吴建新周新军李佩悦俞燕强
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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