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Mineral processing and deep purification method for quartz sand

A purification method, quartz sand technology, applied in the direction of silicon oxide, etc., can solve the problem of high iron content in quartz sand, achieve the effect of reducing dependence and improving utilization value

Inactive Publication Date: 2013-11-20
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a deep purification method for quartz sand in order to solve the defect of high iron content in quartz sand existing in the existing deep purification method of quartz sand beneficiation

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  • Mineral processing and deep purification method for quartz sand

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Embodiment 1

[0022] List of Examples

[0023]

[0024] Note: 1. Operating yield refers to the recovery rate of materials after acid cooking. Example: The operating yield is 99.5%, which means that 100kg of material is acid boiled to obtain 99.5kg and lose 0.5kg.

[0025] 2. Acid boiling concentration refers to the weight ratio of quartz sand and sulfuric acid solution.

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Abstract

The invention discloses a mineral processing and deep purification method for quartz sand. The method comprises the following steps of (a) during the scrubbing of the quartz sand in an acid-digestion scrubbing machine, adding a sulfuric acid solution with the weight concentration of 15-60% for acid digestion, wherein the weight ratio of the quartz sand to the sulfuric acid solution is 25-65%, the temperature for acid digestion is 50-135 DEG C, the time for acid digestion is 20-90 minutes, and sulfuric acid can quickly react with iron-bearing minerals in the quartz sand through the organic combination of the mechanical scrubbing and acid digestion of the quartz sand; and (b) after acid digestion, separating the quartz sand from filtrate through filtrating, wherein the filtrate can be recycled, and products with Fe2O3 content meeting requirements are obtained after the quartz sand is cleaned. The method has the beneficial effects that aims which can not be achieved by the conventional mineral processing methods are realized, the dependence on high-quality siliceous resources is lowered, and the utility value of the quartz sand products is increased; and the method can also be applied to the field of the mineral processing and purification of non-metallic minerals, such as quartz fine (tail) sand, feldspar and the like.

Description

[0001] technical field [0002] The invention relates to a method for deep purification of quartz sand beneficiation, which utilizes H 2 SO 4 Rapid reaction with iron-containing impurity minerals ubiquitous in quartz to generate water-soluble Fe 2 (SO 4 ) 3 or FeSO 4 and was removed. Background technique [0003] Quartz (sand) is an important industrial mineral raw material, widely used in glass, ceramics, metallurgy, construction, electrical and electronics, aerospace and other fields, of which Fe 2 o 3 Content is a key factor affecting the quality of quartz sand products and their use value. With the development of science and technology and the progress of society, high-tech fields such as electrical and electronics, semiconductors, and aerospace have higher and higher requirements for quartz quality, and the demand for high-purity (low-iron) quartz sand is increasing, and high-quality quartz Mineral resources are increasingly depleted. Conventional beneficiation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/113
Inventor 彭寿吴建新段树桐茆令文谷翠红李佩悦
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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