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Beneficiation process to remove ferrotitanium from kaolin

A kaolin and process technology, applied in the field of kaolin ore beneficiation and removal of fine iron and titanium, can solve the problems of insignificant impurity removal effect and low efficiency, and achieve the effects of improving whiteness, overcoming energy barriers, and efficiently removing impurities

Active Publication Date: 2018-03-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these beneficiation methods generally have problems such as ineffective removal of impurities and low efficiency. Therefore, further exploration of high-efficiency kaolin iron and titanium removal processes has important research and application significance.

Method used

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  • Beneficiation process to remove ferrotitanium from kaolin
  • Beneficiation process to remove ferrotitanium from kaolin
  • Beneficiation process to remove ferrotitanium from kaolin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of kaolin iron-removing titanium mineral processing technology, its flow chart is shown in figure 1 , including the following steps:

[0036] 1) Grinding kaolin raw ore (sodium hexametaphosphate is added as a dispersant during grinding) to -10μm content of 75%; 2) Put the obtained material into a slurry with a concentration of 65% and put it in a hexagonal mixing bucket with a baffle Stir; 3) Use a pH regulator to adjust the pH value of the pulp to 8; 4) Start the mixer, add 700g / t of octylhydroxamic acid at 1800rpm, then add 400g / t of tall oil and stir evenly; 5) Mixer Adjust to a suitable rotating speed of 4500rpm, and continue shearing and stirring for 25min; 6) after shearing and stirring, the obtained pulp is transferred to a strong magnetic separator with a magnetic field strength of 1.2T for sorting, and the flow rate of the pulp is 1cm / s; 7) the magnetic The obtained kaolin slurry is transferred to a centrifugal concentrator for gravity separation to obt...

Embodiment 2

[0041] A kind of kaolin iron-removing titanium mineral processing technology, specifically comprises the following steps:

[0042] 1) Grinding kaolin raw ore (adding polyacrylamide as a dispersant during grinding) to -10μm content of 80%; 2) Put the obtained material into a slurry with a concentration of 70% and put it in a hexagonal mixing bucket with a baffle for stirring ; 3) Adjust the pH value of the pulp to 7.5 by using a pH regulator; 4) Start the mixer, add 1000g / t of octyl hydroxamic acid at 2000rpm, then add 500g / t of tall oil and stir evenly; 5) adjust the mixer To the appropriate speed of 5500rpm, continue to shear and stir for 25min; 6) After shearing and stirring, transfer the obtained pulp to a magnetic separator with a magnetic field strength of 1.5T for separation, and the flow rate of the pulp is 1.5cm / s; 7) Magnetically separate The obtained kaolin slurry is transferred to a centrifugal concentrator for gravity separation to obtain kaolin concentrate, wherei...

Embodiment 3

[0047] A kind of kaolin iron-removing titanium mineral processing technology, specifically comprises the following steps:

[0048]1) Grinding kaolin raw ore (adding water glass as a dispersant during grinding) to -10 μm content of 70%; 2) mixing the obtained material into a slurry with a concentration of 60% and putting it into a hexagonal mixing bucket with a baffle for stirring; 3) Use a pH regulator to adjust the pH value of the pulp to 7; 4) Start the mixer, add 400g / t of octyl hydroxamic acid at 1500rpm, then add 250g / t of tall oil and stir evenly; 5) Adjust the mixer to Suitable rotating speed is 3500rpm, continuous shearing and stirring for 20min; 6) After shearing and stirring, the obtained pulp is transferred to a strong magnetic separator with a magnetic field strength of 1.0T for separation, and the flow rate of the pulp is 0.75cm / s; 7) Magnetic separation The obtained kaolin slurry is transferred to a centrifugal concentrator for gravity separation to obtain kaolin...

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Abstract

The invention discloses a beneficiation process to remove ferrotitanium from kaolin, comprising the steps of 1) subjecting crude kaolin to mashing and dispersing or grinding, and adjusting concentration to obtain pulp I; 2) stirring the pulp, and adjusting pH value of the pulp; 3) adding caprylohydroxamic acid and tole sequentially under stirring; 4) adjusting stirring speed to perform shear mixing; 5) subjecting the obtained pulp to magnetic separation in a high intensity magnetic separation machine; 6) transferring the pulp obtained by means of magnetic separation into a centrifugal beneficiation machine to perform gravitational separation so as to obtain kaolin concentrate. A beneficiation agent used herein is capable of selectively adsorbing to the surface of anatase and hematite so that the surface is hydrophobized; the hydrophobization in conjunction with external intense shearing action provides hydrophobized aggregation for particles, separation by a magnetic separator and gravitational separation are performed in sequence, and impurities can be removed efficiently; the difficulty in removing fine-particulate ferrotitanium from kaolin in the prior art is overcome, and concentrate quality and resource utilization rate can be increased.

Description

technical field [0001] The invention belongs to the technical field of beneficiation of kaolin ore, and in particular relates to a method for removing fine iron and titanium through beneficiation of kaolin ore. Background technique [0002] The color of kaolin is mainly related to the metal oxides or organic matter it contains. Generally contain Fe 2 o 3 Rose red, brownish yellow; containing Fe 2+ Light blue, light green; containing MnO 2 It is light brown; if it contains organic matter, it is light yellow, gray, blue, black and other colors. The existence of these impurities reduces the natural whiteness of kaolin, and iron and titanium minerals also affect the whiteness of calcination, causing stains or melting scars on porcelain. Therefore, it is necessary to remove iron and titanium in kaolin beneficiation. [0003] At present, kaolin beneficiation methods mainly include carrier flotation (research on carrier flotation system for removing iron from kaolin, Hou Ruoz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B7/00B03B9/00
CPCB03B7/00B03B9/00
Inventor 任子杰江哲伊高惠民刘顺兵高钦
Owner WUHAN UNIV OF TECH
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