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Process for refining hematite type potassium feldspar sand powder

A technology of stone sand powder and hematite, which is applied in the field of purification of hematite-type potassium feldspar sand powder, can solve the problem that the minimum whiteness of potassium feldspar sand powder cannot meet the requirements of 50-55 degrees.

Active Publication Date: 2015-09-23
HUANGGANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although pickling has a certain effect on improving the whiteness of the product, it still cannot meet the minimum whiteness requirement of 50-55 degrees for potassium feldspar sand powder.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In this embodiment, the process of the present invention is illustrated by taking Qianhedong Zhaihoushan potash feldspar mine and rod mill as wet sand making equipment in Qianxi County as an example.

[0019] Raw ore is coarsely broken by jaw crusher 600*900, and then medium broken by jaw crusher 250*1000, then sent to cone crusher D1200 for fine crushing to produce particles with a diameter of less than 25mm, and the above particles are sent to the rod mill by belt conveyor Wet sand making, the mortar flowing out of the mill is firstly deironed by a magnetic separator with a magnetic field strength of 5000 gauss, and then classified by a hydraulic classifier to collect the required 60-200 mesh mortar, and then use a magnetic field strength of The 15,000 Gauss magnetic separator performs magnetic separation, dehydration, and drying. The dried material is sent to a fluidized furnace, and is roasted at a temperature of 600 degrees for 0.5 hours. After cooling to room tempe...

Embodiment 2

[0022] In this embodiment, the process of the present invention is illustrated by taking the Beishan Potassium Feldspar Mine of Tanggou Reservoir in Qianxi County and the ball mill as wet sand making equipment as examples.

[0023]Raw ore is coarsely crushed by jaw crusher 600*900, and then crushed by jaw crusher 250*1000, then sent to cone crusher D1200 for fine crushing to produce particles with a diameter of less than 25mm, and the above particles are sent to ball mill by belt conveyor for wet process Sand, the mortar flowing out of the mill is firstly deironed by a magnetic separator with a magnetic field strength of 5000 gauss, and then classified by a hydraulic classifier to collect the required 100-200 mesh mortar, and the magnetic field strength in use is 15000 gauss Magnetic separator for magnetic separation, dehydration and drying. The dried material is sent into the fluidized bed, roasted at a temperature of 550 degrees for 2 hours, cooled to room temperature, and t...

Embodiment 3

[0026] In this embodiment, the process of the present invention is illustrated by taking Qianhedong Zhaihoushan potash feldspar mine in Qianxi County and Raymond machine as dry sand making equipment as examples.

[0027] After the raw ore is crushed by the crusher to particles with a diameter of less than 25mm, it is sent to the Raymond machine for dry sand making. After the sand powder is separated and sieved by a cyclone to 60-200 mesh, the surface magnetic field of the 3-stage magnetic separation drum is used. The magnetic separator with a strength of 12000 gauss or more is magnetically separated twice, and then sent to a fluidized furnace for roasting at a temperature of 570 degrees for 1 hour, cooled to room temperature, and then magnetically separated by a magnetic separator with a magnetic field strength of not less than 12000 gauss. Choose 3 times, use 18% hydrochloric acid + 10% nitric acid to carry out dynamic pickling at a temperature of 80 degrees Celsius for 2 hour...

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Abstract

The invention provides a process for refining hematite type potassium feldspar sand powder. The process comprises the following steps: firstly crushing potassium feldspar to be formed into particles, and then adopting dry method ore grinding or wet method ore grinding to obtain sand powder or sand mortar; screening the sand powder prepared through a dry method, and adopting a multistage high magnetic separator to conduct magnetic separation; adopting the magnetic separator to conduct magnetic separation on the sand mortar prepared through wet method sand making, and adopting an electromagnetic separator to conduct magnetic separation on the classified sand mortar, then dehydrating, drying, calcinating iron not removed completely through a boiling furnace to be removed through high magnetic separation, removing the iron still not removed through a pickling manner, and finally separating quartz particles from potassium feldspar through a flotation method so as to obtain the high purity potassium feldspar sand powder. The refining process not only can meet requirements of domestic glass, ceramic and enamel industries on high-brightness potassium feldspar sand powder, but also can conduct industrial production, is environment-friendly, has no waste acid, waste water or waste gas discharge, and is an environment-friendly refining production line.

Description

technical field [0001] The invention relates to a production method for purifying hematite-type potassium feldspar sand powder, which belongs to the technical field of non-metallic ore deep processing. Background technique [0002] Feldspar is an aluminosilicate mineral containing calcium, sodium and potassium. There are many kinds of it, such as albite, anorthite, barium feldspar, barium ice feldspar, microplagioclase, orthoclase, Sanite, etc. They all have glass luster and come in a variety of colors, including colorless, white, yellow, pink, green, gray, black and so on. Some are transparent, some are translucent. Feldspar itself should be colorless and transparent. The reason why it is colored or not completely transparent is because it contains other impurities. Some are lumpy, some are plate-like, some are columnar or needle-like, and so on. The hardness of feldspar fluctuates between 6-6.5, and the specific gravity fluctuates between 2-2.5. It is brittle, has high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 田晋丞
Owner HUANGGANG NORMAL UNIV
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