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Method for purifying and whitening potassium feldspar powder

A technology of potassium feldspar and ball milling, which is applied in the field of purification and whitening of potassium feldspar powder, can solve the problems of high cost of impurity removal, generation of waste acid, large energy consumption, etc., and achieve improved flotation effect, whitening efficiency and simple process Effect

Inactive Publication Date: 2018-12-07
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

Magnetic separation has a good iron removal effect, and the iron content can be reduced to 0.24%, but other impurities are difficult to remove, low efficiency, serious air pollution and other shortcomings
Flotation has a good impurity removal effect. Its process is simple and easy to process, but it has high processing cost, high energy consumption, and low profit; its process needs to add chemical substances, resulting in high production cost, serious waste of resources, and serious environmental pollution.
In recent years, potassium feldspar has also been purified by pickling. Generally, sulfuric acid pickling is used. This method has a good impurity removal effect and a certain whitening effect, but requires high concentration of sulfuric acid. To reach more than 40%, the utilization rate of sulfuric acid is low, and a large amount of waste acid will be produced, resulting in high cost of impurity removal and great impact on the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for purifying and whitening potassium feldspar powder, comprising the following steps:

[0027] S1. Ball milling: the raw ore is crushed to a mineral material with a particle size of 2-5 mm, and then put into a ball mill for ball milling; water is added for ball milling, and the mass ratio of water and mineral material is 35:65. The particle size of the ball mill was 60 mesh, and the ball mill slurry was obtained.

[0028] S2. Magnetic separation: The ball mill slurry is subjected to high-gradient magnetic separation, the magnetic field strength of the high-gradient magnetic separator is controlled to be 1.0T, the slurry flow rate is 1.5cm / s, and the slurry is subjected to magnetic separation through the high-gradient magnetic separator. Select to obtain magnetic separation slurry.

[0029] S3. Primary flotation: Add sulfuric acid to adjust the pH value of the magnetic separation slurry to 5.5, then add collectors and foaming agents to collect foam products to...

Embodiment 2

[0033] A method for purifying and whitening potassium feldspar powder, comprising the following steps:

[0034] S1. Ball milling: Crushing the raw ore to mineral materials with a particle size of 2-5mm, and then put them into a ball mill for ball milling; add water for ball milling, and the mass ratio of water and mineral materials is 30:70. The particle size of the ball mill was 100 mesh, and the ball mill slurry was obtained.

[0035] S2. Magnetic separation: The ball mill slurry is subjected to high-gradient magnetic separation, the magnetic field strength of the high-gradient magnetic separator is controlled to be 0.8T, the flow rate of the slurry is 0.8cm / s, and the slurry is subjected to magnetic separation through the high-gradient magnetic separator. Select to obtain magnetic separation slurry.

[0036] S3. Primary flotation: Add sulfuric acid to adjust the pH value of the magnetic separation slurry to 5, then add collectors and foaming agents to collect foam products...

Embodiment 3

[0040] A method for purifying and whitening potassium feldspar powder, comprising the following steps:

[0041] S1. Ball milling: Crushing the raw ore to mineral materials with a particle size of 2-5mm, and then putting them into a ball mill for ball milling; adding water for ball milling, and the mass ratio of water and mineral materials is 40:60. The particle size of the ball mill was 50 mesh to obtain a ball mill slurry.

[0042] S2. Magnetic separation: The ball mill slurry is subjected to high-gradient magnetic separation, the magnetic field strength of the high-gradient magnetic separator is controlled to be 1.2T, the flow rate of the slurry is 2cm / s, and the slurry is subjected to magnetic separation through the high-gradient magnetic separator , to obtain magnetic separation slurry.

[0043] S3. Primary flotation: Add sulfuric acid to adjust the pH value of the magnetic separation slurry to 6, then add collectors and foaming agents to collect foam products to obtain f...

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Abstract

The invention provides a method for purifying and whitening potassium feldspar powder. The method comprises the steps of ball milling, magnetic separation, primary flotation, secondary flotation and dehydration, firstly, magnetic separation is performed so as to remove part of the iron from potassium feldspar and improve whiteness, and then flotation is performed twice so as to remove iron and mica which have main influence on the whiteness from the potassium feldspar, so that the whitening effect is increased. For the primary flotation, petroleum sodium sulfonate and sodium oleate are used asflotation collectors, and for the secondary flotation, lauryl amine, dodecyl trimethyl ammonium chloride and hexadecyl trimethyl ammonium chloride are used as collectors. According to the method, thepotassium feldspar powder is whitened by adopting the processes of ball milling, magnetic separation, primary floatation, secondary floatation and dehydration, and a physical method and a chemical method are combined for treatment, so that the whitening efficiency is improved, and the pressure on the environment due to the use of high-concentration sulfuric acid is avoided.

Description

technical field [0001] The invention relates to the technical field of potassium feldspar powder processing, in particular to a method for purifying and whitening potassium feldspar powder. Background technique [0002] Potassium feldspar is a kind of feldspar mineral. It is a potassium-containing framework silicate. It is the general name of three homogeneous and multi-phase transformations of KAlSi3O8, sanitine, orthoclase and micro-feldspar. Potassium feldspar has the characteristics of low melting point, long melting interval and high viscosity of molten liquid, and the glassy substance melted at high temperature has the characteristics of transparency, and is widely used in the fields of glass and ceramic industries. [0003] In recent years, with the development of color TV glass bulbs and ultra-high-voltage electric porcelain industry, the daily-use ceramics have become increasingly high-grade, and the demand for high-purity low-iron potassium feldspar is increasing. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B1/00
CPCB03B1/00B03B7/00
Inventor 邓培有
Owner 贺州市骏鑫矿产品有限责任公司
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