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Whitening method of albite powder

A technology of feldspar powder and albite, which is applied in the whitening field of albite powder, can solve the problems of environmental pollution, increase whitening process steps, increase costs and the like, and achieve the effect of avoiding environmental pollution

Inactive Publication Date: 2018-12-14
广西驰胜农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The whitening process of the above invention adopts the addition of chloride, calcining at 800-900 ° C to make the chloride and feldspar iron, titanium and other color-causing impurity ions form volatile ferric chloride or titanium tetrachloride, and the resulting chloride If the tail gas treatment of iron or titanium tetrachloride is not carried out, it will cause huge pollution to the environment. If the tail gas treatment is carried out, the whitening process steps will be increased, and the cost will inevitably be increased

Method used

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  • Whitening method of albite powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A whitening method of albite powder, comprising the following steps:

[0022] (1) Ball milling: the albite ore is ball-milled into stone powder by a ball mill;

[0023] (2) Sieving: the stone powder in step (1) is sieved to remove large particles to obtain albite powder with a particle size of not less than 200 mesh;

[0024] (3) pulping: pour the albite powder of step (2) into the pulping tank and add water to make a concentration of 20% pulp, then add the tripolyphosphoric acid whose quality is 0.05% of the pulp in the pulp Sodium, stir evenly with a mixer, and heat to 50°C;

[0025] (4) Pickling: Add oxalic acid to the pulp of step (3), the ratio of the oxalic acid to the pulp is 1:20 by weight, the mass fraction of the aqueous oxalic acid solution is 2%, and the pickling time is 1.5h ;

[0026] (5) filter: filter the ore pulp that step (4) acid washes;

[0027] (6) Calcination: Send the pulp filtered in step (5) into a calciner for calcination for 1 hour, and co...

Embodiment 2

[0029] A whitening method of albite powder, comprising the following steps:

[0030] (1) Ball milling: the albite ore is ball-milled into stone powder by a ball mill;

[0031] (2) Sieving: the stone powder in step (1) is sieved to remove large particles to obtain albite powder with a particle size of not less than 200 mesh;

[0032] (3) pulping: pour the albite powder of step (2) into the pulping tank and add water to make a concentration of 22% pulp, then add the tripolyphosphoric acid whose quality is 0.07% of the pulp in the pulp A mixture of sodium and sodium hexametaphosphate in a ratio of 1:1, stirred evenly with a mixer, and heated to 70°C;

[0033] (4) Pickling: Add oxalic acid to the pulp of step (3), the ratio of oxalic acid to the pulp is 1:24 by weight, the mass fraction of the aqueous oxalic acid solution is 4%, and the pickling time is 1.8h ;

[0034] (5) filter: filter the ore pulp that step (4) acid washes;

[0035] (6) Calcination: Send the pulp filtered i...

Embodiment 3

[0037] A whitening method of albite powder, comprising the following steps:

[0038] (1) Ball milling: the albite ore is ball-milled into stone powder by a ball mill;

[0039] (2) Sieving: the stone powder in step (1) is sieved to remove large particles to obtain albite powder with a particle size of not less than 200 mesh;

[0040] (3) pulping: pour the albite powder of step (2) into the pulping tank and add water to make a concentration of 25% pulp, then add the hexametaphosphoric acid whose quality is 0.08% of the pulp in the pulp A mixture of sodium and sodium pyrophosphate in a ratio of 1:1, stirred evenly with a mixer, and heated to 85°C;

[0041] (4) pickling: the ore pulp of step (3) is added oxalic acid, and the ratio of described oxalic acid and described ore pulp by weight is 1:25, and the mass fraction of described oxalic acid aqueous solution is 3%, and pickling time is 2h;

[0042] (5) filter: filter the ore pulp that step (4) acid washes;

[0043] (6) Calcina...

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Abstract

The invention provides a whitening method of an albite powder, and belongs to the technical field of ore powder whitening. The invention comprises steps of ball milling, sieving, pulping, pickling, filtering and calcining to whiten the albite powder and utilizes oxalic acid as a pickling agent, and oxalic acid ions and iron ions can form a complex compound soluble in water, so that the dissolved iron ions are constantly complexed and the equilibrium constantly moves to the direction of dissolution. Therefore, color minerals such as FeO, Fe2O3, Fe(OH)3 and the like are constantly dissolved until to be completely removed and residual acid of the albite powder can decompose into carbon dioxide and water during the calcination process, so that the pollution to the environment is avoided, the whiteness of the albite powder is improved to be over 85% and the application in production is satisfied.

Description

technical field [0001] The invention relates to the technical field of ore powder whitening, in particular to a whitening method of albite powder. Background technique [0002] Albite (NaAlSi 3 o 8 ) is a common feldspar mineral, a sodium aluminosilicate, which is a raw material for the manufacture of glass and ceramics. Albite minerals are often associated with some dark minerals and albite particles adsorb some pigment ions on the surface, which affects the whiteness of the raw ore and products, reduces the quality of the product, and limits the application range of the product. It has become an adjustment product for the albite processing industry. The main obstacle to structure and expand the market. The main reason for the coloration of feldspar is that it contains color-causing impurity ions such as iron and titanium, so it is of great significance to remove the color-causing ions and improve its whiteness. [0003] The Chinese invention patent application with the...

Claims

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Application Information

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IPC IPC(8): C01B33/26
CPCC01B33/26
Inventor 谢宗宜
Owner 广西驰胜农业科技有限公司
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