Potassium feldspar impurity removing and selecting method

A technology of potassium feldspar and flotation, which is applied in the direction of chemical instruments and methods, flotation, wet separation, etc., can solve the problems affecting the whiteness of ceramics, the chemical stability of dielectric properties, and the whiteness and quality of feldspar. Large, unable to remove mica and other problems, to achieve the effect of being suitable for popularization, enhancing capture and selectivity, and reducing adhesion strength

Active Publication Date: 2019-02-19
贺州市骏鑫矿产品有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Iron and mica are the main impurities of potassium feldspar ore, which affect the whiteness, dielectric properties, and chemical stability of ceramics. At present, the research on the removal of impurities from feldspar ore mainly focuses on removing the iron impurities in it. For the removal of mica whitening There are few researches, and the content of mica in mineral rocks is low, but it has a great influence on the whiteness and quality of feldspar ore, and mica is a silicate mineral with layered structure, acid and alkali resistance, and stable chemical properties. hard to remove
At present, mica removal methods are mainly as follows: under certain conditions, mineral dressing agents are used to capture mica and separate it from feldspar. Commonly used floating agents are chemical agents such as surfactants and ionic collectors. Most of the agents are Toxic substance, large amount of use and discharge will pollute the environment
For example, Chinese patent 201710843849.9 discloses a production and preparation method of potassium feldspar powder. Impurities are removed through a series of physical methods such as raw ore cleaning, screening, crushing, grinding, magnetic separation and dehydration to obtain potassium with less iron and high whiteness. Feldspar, but failed to remove mica, and the purity is not high; such as the literature "Research on the Whitening of Mica in Feldspar Mine", Pan Dawei et al., "Chinese Ceramics", 2015 (1): 54-57, the research believes that the mass ratio is adopted The mixture of dodecylamine and octadecylamine of 2:1 is used as a flotation agent to remove mica in feldspar ore, but dodecylamine is a toxic agent, and a large amount of use and discharge will pollute the environment. Therefore, the application is based on The above-mentioned published documents improve the preparation and impurity removal methods of potassium feldspar

Method used

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Examples

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Effect test

Embodiment 1

[0016] A kind of potassium feldspar impurity-removing and concentrating method of the present embodiment comprises the following steps:

[0017] (1) Raw ore pretreatment: After crushing the excavated potassium feldspar raw ore, put it into the spiral chute to wash off the sludge, and dehydrate it for later use;

[0018] (2) Preliminary screening: the dehydrated ore is put into an ore color sorter for screening to obtain a raw ore with a whiteness of 15%;

[0019] (3) crushing treatment: crushing the screened raw ore to obtain placer with a particle size of 1 cm;

[0020] (4) Grinding treatment: first put the crushed placer into a ball mill for fine grinding and sieving to obtain 50-mesh ore sand particles, and then send them to a desliming cyclone to remove sludge to obtain deslimed ore pulp;

[0021] (5) Magnetic separation: the deslimed ore pulp is passed through the weak magnetic electromagnetic beneficiation equipment and the strong magnetic electromagnetic beneficiation ...

Embodiment 2

[0028] A kind of potassium feldspar impurity-removing and concentrating method of the present embodiment comprises the following steps:

[0029] (1) Raw ore pretreatment: After crushing the excavated potassium feldspar raw ore, put it into the spiral chute to wash off the sludge, and dehydrate it for later use;

[0030] (2) Preliminary screening: the dehydrated ore is put into an ore color sorter for screening to obtain a raw ore with a whiteness of 25%;

[0031] (3) crushing treatment: crushing the screened raw ore to obtain placer with a particle size of 0.2 cm;

[0032] (4) Grinding treatment: first put the crushed placer into a ball mill for fine grinding and screening to obtain 80-mesh ore sand particles, and then send them into a desliming cyclone to remove sludge to obtain deslimed ore pulp;

[0033] (5) Magnetic separation: the deslimed ore pulp is passed through the weak magnetic electromagnetic beneficiation equipment and the strong magnetic electromagnetic benefici...

Embodiment 3

[0040] A kind of potassium feldspar impurity-removing and concentrating method of the present embodiment comprises the following steps:

[0041] (1) Raw ore pretreatment: After crushing the excavated potassium feldspar raw ore, put it into the spiral chute to wash off the sludge, and dehydrate it for later use;

[0042] (2) Preliminary screening: the ore after dehydration is put into the ore color sorter and screened to obtain a raw ore with a whiteness of 20%;

[0043] (3) crushing treatment: crushing the screened raw ore to obtain placer with a particle size of 0.1 cm;

[0044] (4) Grinding treatment: first put the crushed placer into a ball mill for fine grinding and sieving to obtain 60-mesh ore particles, and then send them into a desliming cyclone to remove sludge to obtain deslimed ore pulp;

[0045] (5) Magnetic separation: the deslimed ore pulp is passed through the weak magnetic electromagnetic beneficiation equipment and the strong magnetic electromagnetic benefici...

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Abstract

The invention discloses a potassium feldspar impurity removing and selecting method, and relates to the technical field of potassium feldspar processing. The method includes the steps: raw ore cleaning; screening; crushing; ore grinding; magnetic separation; select flotation; dewatering. A magnetic separation method includes the steps: finely grinding the magnetically separated ores into fine sandparticles with particle diameter larger than or equal to 200 meshes; adding water to mix mixture to obtain 35-45% ore pulp; adjusting pH (potential of hydrogen) of the ore pulp to reach 1-2; adding chemicals, and stirring mixture until foams are formed; removing the foams in a scraped manner; performing dewatering until the content of water is smaller than or equal to 15% to obtain potassium feldspar. The chemicals account for 3-5% of the weight of the ore pulp and comprise, by weight, 8-11 parts of okra extracts, 5-9 parts of eucalyptus leaf extracts, 1-4 parts of persimmon extracts and 1-3parts of N-lauryl biquaternary ammonium salt which are mixed to form the chemicals. A select flotation method is improved, mica in the potassium feldspar is effectively removed, potassium feldspar powder with high whiteness and less mica is produced, the whiteness of the produced potassium feldspar powder reaches 60 or more, and the used chemicals are free from toxicity and pollution, environmentally friendly and suitable for popularization and use as compared with a traditional select flotation method.

Description

【Technical field】 [0001] The invention relates to the technical field of potassium feldspar processing, in particular to a method for removing impurities and refining potassium feldspar. 【Background technique】 [0002] Potassium feldspar is a kind of feldspar, which is a common feldspar mineral and is a sodium aluminosilicate. Potassium feldspar is generally a glassy crystal, and it is one of the main raw materials for making glass and ceramics. [0003] In recent years, with the rapid development of my country's ceramic industry and glass industry, the demand for high-purity potassium feldspar continues to increase. Iron and mica are the main impurities of potassium feldspar ore, which affect the whiteness, dielectric properties, and chemical stability of ceramics. At present, the research on the removal of impurities from feldspar ore mainly focuses on removing the iron impurities in it. For the removal of mica whitening There are few researches, and the content of mica ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26B03B7/00B03D1/02B03D1/01B03D101/02B03D103/06
CPCB03B7/00B03D1/011B03D1/021B03D2201/02C01B33/26
Inventor 邓培有
Owner 贺州市骏鑫矿产品有限责任公司
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