Selection method for recovering needle-like wollastonite from mixed ores

A needle-shaped wollastonite and mixed ore technology, applied in the direction of solid separation, etc., can solve the problems of low enrichment ratio, coarse sorting particle size, and inability to recover Tc-type wollastonite, so as to achieve the effect of increasing added value

Active Publication Date: 2020-02-04
广东五岭硅灰石有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the beneficiation processes of wollastonite include hand separation, photoelectric separation, magnetoelectric separation, flotation and combined separation, among which hand separation and photoelectric separation are the most widely used, and the separation particle size of these two processes is relatively coarse and enriches It is relatively low, and it is not yet possible to recover Tc-type wollastonite (acicular wollastonite) from the wollastonite mixed ore with multiple objects, resulting in waste of resources and is not conducive to the efficient use of resources.

Method used

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  • Selection method for recovering needle-like wollastonite from mixed ores

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Experimental program
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Effect test

Embodiment 1

[0030] A wollastonite mixed ore 1, the minerals in the original ore include wollastonite, calcite, quartz, diopside, fushanite, etc., among which wollastonite is mainly Tc type wollastonite and ZM parawollastonite, false wollastonite A small amount of stone. The largest particle size of the raw ore is less than 400mm, and about 80% of the ore blocks have a particle size of 250-450mm, and the water content is about 3.5%.

[0031] The beneficiation method of reclaiming acicular wollastonite from this wollastonite mixed ore 1 comprises the following steps:

[0032] (1) The raw ore is put into an impact crusher 1, and the maximum particle size of the fragments after crushing is about 100 mm. Most of the gangues such as calcite and quartz are removed by manual selection to obtain wollastonite mixed coarse concentrate;

[0033] (2) Put wollastonite mixed coarse concentrate into impact crusher 2 and be crushed into scrap, the maximum particle size of scrap is 20mm;

[0034] (3) The...

Embodiment 2

[0041] A wollastonite mixed ore 2, the minerals in the original ore include wollastonite, quartz, calcite and other minerals in a small amount, of which wollastonite is mainly Tc type wollastonite and ZM parawollastonite, a small amount of false wollastonite, needle-shaped The mineral weight of wollastonite accounts for about 30% of the original ore weight. The largest particle size of raw ore is less than 350mm, and about 90% of the ore block particle size is 200-350mm, and the water content is about 3.0%.

[0042] The beneficiation method of reclaiming acicular wollastonite from this wollastonite mixed ore 2 may further comprise the steps:

[0043] (1) The raw ore is put into a jaw crusher, and the maximum particle size of the crushed small pieces is about 125mm. Most of the gangues such as quartz are removed by manual selection to obtain wollastonite mixed coarse concentrate;

[0044] (2) put wollastonite mixed coarse concentrate into impact crusher and be crushed into scr...

Embodiment 3

[0052] A wollastonite mixed ore 3, the minerals in the original ore include wollastonite, calcite, and a small amount of other gangue minerals, of which wollastonite includes Tc type wollastonite and ZM parawollastonite, the largest particle size of the original ore is less than 300mm, and About 90% of the ore blocks have a particle size of 150-300mm and a water content of about 2.0%.

[0053] The beneficiation method of reclaiming acicular wollastonite from this wollastonite mixed ore 3 comprises the following steps:

[0054] (1) The raw ore is put into an impact crusher 1, and the maximum particle size of the fragments after crushing is about 75mm, and most of the gangues such as quartz are removed by manual selection to obtain wollastonite mixed coarse concentrate;

[0055] (2) Put wollastonite mixed coarse concentrate into impact crusher 2 and be pulverized into scrap, the maximum particle diameter of scrap is 5mm;

[0056] (3) The crushed material is put into a circular ...

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Abstract

The invention belongs to the technical field of non-metal mineral processing, and in particular relates to a selection method for recovering needle-like wollastonite from mixed ores. Mixed wollastonite ores are crushed by crushing equipment in a characteristic force applying mode by means of crushing characteristics and grain shape differences of the needle-like wollastonite and other polymorphicand gangue minerals, so that the grain shape differences are expanded while the needle-like structure is protected. A crushed product is then controlled and screened precisely, so that the needle-likewollastonite is separated effectively, and therefore, the recovery rate of the needle-like wollastonite can be improved effectively.

Description

technical field [0001] The invention belongs to the technical field of non-metallic ore mineral processing, and in particular relates to a beneficiation method for recovering acicular wollastonite from mixed ore. Background technique [0002] Wollastonite is a single-chain silicate mineral, usually in the form of acicular, flaky, radial or fibrous aggregates, with good dielectric properties, high whiteness, high heat resistance and weather resistance, Widely used in ceramics, metallurgy, papermaking, plastics, coatings and other fields. Pure wollastonite is rare in nature, and is often accompanied by minerals such as quartz, calcite, diopside, garnet, etc. It needs to be purified by mineral processing to obtain wollastonite concentrate with high purity and less impurities; in addition, due to the formation of Depending on the conditions, wollastonite has three homogeneous polymorphs, including Tc type wollastonite with triclinic chain structure, commonly known as low temper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/00
CPCB03B9/00
Inventor 胡勇郑钦郑锐何东祥唐显韬
Owner 广东五岭硅灰石有限公司
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