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Preparation method for processing ultrawhite mineral powder with light ore

A mineral powder and ore technology, which is applied in the field of non-metallic mineral powder preparation, can solve the problems of low whiteness of finished powder, difficult powder quality, high-end application requirements, and high labor intensity, and achieve the goal of increasing the limit whiteness value Effect

Inactive Publication Date: 2013-05-01
YICHENG XINQING CALCIUM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Calcite, dolomite, wollastonite and natural light-colored minerals formed by the symbiosis of other calcium-magnesium-aluminum minerals are the most commonly used raw materials for white powder preparation. White powder is prepared by crushing, manual sorting, and crushing processes. Its products are widely It is used in many fields such as paint filler, plastic profile, paper filler, cable powder, toothpaste, etc., but the long-term defects of high labor intensity, low efficiency, and low whiteness of the finished powder in the adopted process make it difficult for the powder quality to meet the needs of many high-end applications.

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  • Preparation method for processing ultrawhite mineral powder with light ore

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Effect test

Embodiment 1

[0029] A preparation method for processing ultra-white mineral powder with light-colored ore, its steps are as follows:

[0030] ① Add CaCO 3 Content ≥ 90%, Fe 2 o 3 1050kg of white massive calcite with a content of 1.50% is crushed into pellets with a particle size of <6mm by a crusher;

[0031] ②Sieve the granular material with a screening machine with apertures of 2×2mm and 6×6mm double-layer screens to obtain 1000kg of granular material with a particle size distribution of 2mm-6mm, and return the granular material >6mm to the crushing system to continue crushing , the granular material <2mm is crushed and used to make ordinary powder;

[0032] ③A color difference sorting machine with digital camera, digital signal processing, high-pressure airflow, air gun, separation slide, and material collection device is used to electromechanically sort and separate calcite particles with variegated particles, and control 97% according to the whiteness of the finished product. % re...

Embodiment 2

[0036] A preparation method for processing ultra-white mineral powder with light-colored ore, its steps are as follows:

[0037] ① Add CaMg (CO 3 ) 2 Content ≥ 90%, Fe 2 o 3 1040kg of white massive dolomite with a content of 0.60% is crushed into pellets with a particle size of <5mm by a crusher;

[0038] ②Sieve the granular material with a screening machine with apertures of 1×1mm and 5×5mm double-layer screens to obtain 1000kg of granular material with a particle size distribution of 1mm-5mm, and return the granular material >5mm to the crushing system to continue crushing , the granular material <1mm is crushed and used to make ordinary powder;

[0039] ③A color difference sorting machine with digital camera, digital signal processing, high-pressure airflow, air gun, separation slide, and material collection device is used to electromechanically sort and separate dolomite particles with variegated particles, and control the whiteness of the finished product 96% of the ...

Embodiment 3

[0043] A preparation method for processing ultra-white mineral powder with light-colored ore, its steps are as follows:

[0044] ①CaSiO 3 Content ≥ 90%, Fe 2 o 3 1035kg of white massive wollastonite with a content of 0.40% is crushed into pellets with a particle size of <5mm by a crusher;

[0045] ②Sieve the granular material with a screening machine with apertures of 1×1mm and 5×5mm double-layer screens to obtain 1000kg of granular material with a particle size distribution of 1mm-5mm, and return the granular material >5mm to the crushing system to continue crushing , the granular material <1mm is crushed and used to make ordinary powder;

[0046] ③A color difference sorting machine with digital camera, digital signal processing, high-pressure airflow, air gun, separation slide, and material collection device is used to electromechanically sort and separate wollastonite particles with variegated particles. Control 98% of the requirements and select Fe 2 o 3 Content 6.20...

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Abstract

The invention discloses a preparation method for processing ultrawhite mineral powder with light ore. The preparation method comprises the following steps: (1) crushing: crushing a natural undertint lump ore with a crusher into a granule material with a size less than 6mm, (2) sieving: sieving the granule material in Step (1) with a sieving machine provided with a double-layer screen into a granule material with size distribution of 1mm-6mm, (3) conducting color-difference sorting, (4) smashing: smashing the granule material in Step (3) into ultrawhite powder with whiteness of 96%-98%, Fe2O3 content of 0.06%-0.12%, and powder granule diameter d97 of 0.005mm-0.018mm, and (5) inspecting and packaging. With the adoption of the technical scheme, as photoelectric color-difference sorting equipment is introduced, effective electromechanical sorting and separation can be conducted on granule materials with different ores, certain size distribution and different color differences, electromechanical control can be effectively conducted on whiteness and quality of the treated mineral powder, the limit whiteness value of the white powder can be remarkably increased, and the highest blue light whiteness (R457) value can reach 98%.

Description

technical field [0001] The invention belongs to the field of non-metallic ore powder preparation, and in particular relates to a method for preparing ultra-white mineral powder after electromechanical color separation of light-colored ore. This method is suitable for using calcite (also known as heavy calcium carbonate ), dolomite, wollastonite and natural light-colored ores formed by the symbiosis of calcium magnesium aluminum carbonate and silicate minerals are processed into ultra-white mineral powders. Background technique [0002] Calcite, dolomite, wollastonite and natural light-colored minerals formed by the symbiosis of other calcium-magnesium-aluminum minerals are the most commonly used raw materials for white powder preparation. White powder is prepared by crushing, manual sorting, and crushing processes. Its products are widely used. It is used in many fields such as paint filler, plastic profile, paper filler, cable powder, toothpaste, etc., but the long-term def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C21/00B02C23/08B07C5/342
Inventor 陈全国余丽秀孙亚光马俊
Owner YICHENG XINQING CALCIUM IND CO LTD