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Processing method for upgrading and whitening barite ore

A processing method and barite technology, applied in chemical instruments and methods, fibrous fillers, coatings, etc., can solve the problems of insufficient whitening effect, failure, and easy oxidation of sodium dithionite to achieve whitening effect Obvious, prevent failure, enhance the effect of quality improvement and whitening effect

Pending Publication Date: 2022-03-22
GUIZHOU MINZU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

According to reports, using sodium dithionite in sulfuric acid solution can remove part of the iron-containing oxides in barite, so that the whiteness of barite is slightly improved, but the whitening effect is not obvious enough, and sodium dithionite is easily oxidized in the air and fail

Method used

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  • Processing method for upgrading and whitening barite ore

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] see figure 1 , the present invention proposes a processing method for improving the quality and whitening of barite ore, which specifically includes the following steps:

[0031] S1. Use the ore crushing device to crush the barite ore raw material to less than 50mm, and store it for later use;

[0032] S2. Using a jig machine to pre-select and deslime the crushed barite ore raw material obtained in S1, and remove the fine mud and gangue impurities attached to the barite ore;

[0033] S3, put the barite ore raw material treated by S2 into the stirring device, add fluorite powder to the stirring device at the same time, mix evenly, so that the fluorite powder evenly covers the surface of the barite ore;

[0034] The particle size of the fluorite powder used in the S3 is -0.074mm, and the volume ratio of the fluorite powder to the barite ore raw material is 1:50 to 1:500;

[0035] S4, using 80% to 98% concentrated sulfuric acid to spray the barite ore covered with fluori...

Embodiment 2

[0047] see figure 1 , based on Example 1 but with some differences in that the BaSO 4 The content is 92.36%, and the whiteness is 70. According to the technical solution of the present invention, the barite ore is processed through the following steps:

[0048] S1. Use the ore crushing device to crush the barite ore raw material to less than 50mm, and store it for later use;

[0049] S2. Using a jig machine to pre-select and deslime the crushed barite ore raw material obtained in S1, and remove the fine mud and gangue impurities attached to the barite ore;

[0050] S3. Put the barite ore raw material treated by S2 into the stirring device, and add fluorite powder to the stirring device at the same time. The volume ratio of the added fluorite powder and barite is 1:50, mix evenly, so that the fluorite powder is uniform Covering the surface of barite ore;

[0051] S4. Spray the barite ore covered with fluorite powder obtained in S3 with 80% concentrated sulfuric acid, so that...

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Abstract

The invention discloses a processing method for upgrading and whitening barite ore, and belongs to the technical field of mineral processing. A processing method for upgrading and whitening barite ores comprises the following steps: crushing the barite ores to below 50mm, sorting the crushed materials by using a jigging machine, removing fine silt and gangue, uniformly mixing jigging and sorting raw materials with fluorite powder, covering the fluorite powder on the surfaces of the barite ores, spraying 80%-98% concentrated sulfuric acid on the surfaces of the barite ores, and drying to obtain the barite ores. The materials with the surfaces covered with concentrated sulfuric acid and fluorite are placed in a closed environment for heat preservation, then the materials are screened, oversize products are subjected to impurity removal through a light sorting machine or manual sorting, undersize products are sorted through a shaking table or a spiral chute, then a bleaching agent is added into sorted concentrate, soaking is carried out, dewatering and drying are carried out in sequence, and the fluorite is obtained. And respectively obtaining coarse-grained and fine-grained high-whiteness barite products. The technology is simple, operation is easy to control, and especially the whitening effect on barite ore with high organic matter and iron content is obvious.

Description

technical field [0001] The invention relates to the technical field of mineral processing, in particular to a processing method for improving the quality and whitening of barite ore. Background technique [0002] Barite is an important non-metallic mineral, the main component is BaSO4, the specific gravity is 4.0 ~ 4.6g / cm 3 , pure barite was white. Barite is chemically stable and has a large specific gravity. Because of these properties, barite is widely used in industries, such as weighting agents for oil drilling, pigments, paints, papermaking and chemical industries. At present, about 90% of barite is mainly used as a weighting agent for oil drilling, resulting in a large waste of barite resources, while only about 10% of barite is used in industries such as pigments, paints and papermaking. The whiteness requirement is above 80%, and the application of high value-added products is relatively seldom. The main reason is that barite is mixed with organic matter in the na...

Claims

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Application Information

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IPC IPC(8): C09C1/02C09C3/06C09C3/08C09D7/62
CPCC09C1/027C09C3/063C09C3/06C09C3/08C09C3/006C09D7/62C01P2006/90
Inventor 聂登攀罗斌杨杰孟德明戴毅沈向真康自华吴怡逸
Owner GUIZHOU MINZU UNIV
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