Method for preparing high-purity quartz sand through acid pickling

A quartz sand, high-purity technology, applied in the field of quartz sand purification, can solve the problems of pollution, acid liquid cannot be recycled, acid liquid can not be recycled, etc., to achieve the effect of reducing cost, reducing production cost, and rapid blanking

Inactive Publication Date: 2021-06-11
蕲春县昌兴石英设备有限公司
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Problems solved by technology

[0002] The common pickling process for quartz sand is only suitable for small-scale production because the acid solution in the production process cannot be recycled. At the same time, the acid solution cannot be recycled and it is easy to cause environmental pollution.

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  • Method for preparing high-purity quartz sand through acid pickling

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, and the content of the present invention is not limited to the following embodiments.

[0019] A method for preparing high-purity quartz sand by pickling, the schematic flow chart of which is as follows figure 1 The following steps are shown:

[0020] Step 1. Transport the quartz sand to the pickling tank and react with the acid solution at 60-65°C for 6-8 hours. The acid solution consists of 7-9% oxalic acid, 1-3% hydrofluoric acid and 90 % of water is mixed to obtain quartz sand after reacting with acid liquid. The main purpose of pickling is to remove the iron oxide contained in the quartz sand, and the reaction principle is Fe 2 o 3 +3H 2 C 2 o 4 = 2FeC 2 o 4 (precipitation)+2CO 2 +3H 2 O.

[0021] At the same time, deacidify the quartz sand after the acid solution reaction in the pickling tank. The specific method is to flow the acid sol...

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Abstract

The invention relates to the technical field of quartz sand purification, in particular to a method for preparing high-purity quartz sand through acid pickling. The method comprises the steps of mixed reaction with acid liquor, deacidification, sand washing, dehydration, drying, magnetic separation, screening, ton packaging and the like. According to the technical scheme, the high-purity quartz sand can be obtained, the acid liquor can be recycled, the production cost is reduced, the production efficiency is improved, and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of quartz sand purification, in particular to a method for preparing high-purity quartz sand by pickling. Background technique [0002] The common pickling process for quartz sand is only suitable for small-scale production because the acid solution in the production process cannot be recycled. At the same time, the acid solution cannot be recycled and it is easy to cause environmental pollution. Contents of the invention [0003] In order to solve the above problems, the invention provides a method for preparing high-purity quartz sand by pickling, comprising the following steps: [0004] Step 1. Transport the quartz sand to the pickling tank and react with the acid solution at 60-65°C for 6-8 hours. The acid solution consists of 7-9% oxalic acid, 1-3% hydrofluoric acid and 90 % of water is mixed to obtain quartz sand after reacting with acid; [0005] Step 2. Deacidify the quartz sand obtained in step ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/12
CPCC01B33/12
Inventor 余华东王林
Owner 蕲春县昌兴石英设备有限公司
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