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Method for removing iron titanium from non-metallic mineral raw materials

A non-metallic mineral and non-metallic technology, applied in chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problem of inability to effectively remove fine and weakly magnetic iron impurity minerals, expensive vibrating high-gradient magnetic separators, Weak magnetic minerals have poor processing effect, etc., to achieve better processing effect, save grinding cost, and simple design structure

Inactive Publication Date: 2010-01-06
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Ordinary electromagnetic separation can only effectively remove some large-grained and strongly magnetic iron impurity minerals. The disadvantage is that it cannot effectively remove fine and weakly magnetic iron impurity minerals. Generally, it is only suitable for initial selection.
The high gradient magnetic separation method is effective in treating paramagnetic fine iron impurity minerals, but the treatment effect on weak magnetic minerals such as pyrite is not good, and there is a problem of high one-time input cost
The iron removal effect of superconducting magnetic separation is very good, but the equipment cost is more expensive
The magnetic seed separation method can remove fine and weak magnetic iron impurity minerals, and has a good development prospect. However, the existing technology has problems such as the raw ore needs to be ground to 800 mesh, the magnetic seed fineness should reach 1 μm, and the vibration type used is high The harsh conditions of use such as the high price of the gradient magnetic separator limit its further application

Method used

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  • Method for removing iron titanium from non-metallic mineral raw materials
  • Method for removing iron titanium from non-metallic mineral raw materials
  • Method for removing iron titanium from non-metallic mineral raw materials

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Embodiment 1

[0028] As shown in the process flow diagram of the present invention in Fig. 1, the non-metallic mineral used in the present embodiment is warm fire complete black mud, and its chemical composition is, SiO 2 : 62.05%, Al 2 o 3 : 30.95%, Fe 2 o 3 : 2.16%, TiO 2 : 0.64%, K 2 O: 2.76%, Na 2 O: 0.24%, MgO: 0.46%. Firstly grind the whole black mud raw ore with warm fire to 300 meshes, weigh 15Kg of ground fine material, put it into a larger container to make a slurry with a water content of 70% (weight percentage), put it into a stirring machine with an adjustable speed Stir for 10 minutes, add dissolved sodium pyrophosphate, account for 0.5% of the dry powder weight of warm fire black mud, add hydrochloric acid to adjust the pH to 6.5, stir for 10 minutes, add magnetic species Fe dispersed in water 3 o 4 , the amount of magnetic seed is 0.1% of the dry powder weight of warm fire whole black mud, the fineness of magnetic seed is 800 mesh sieve without sieve residue, 1700r / m...

Embodiment 2

[0030] First the whole black mud raw ore of warm fire in embodiment 1 is ground to 250 orders, weighs the fine material 15Kg that grinds in advance, is placed in a bigger container and is made into water content (percentage by weight) and is 50% ore slurry, puts Stir in an agitator with adjustable speed for 20 minutes, add dissolved sodium pyrophosphate, accounting for 1.0% of the dry powder weight of warm fire black mud, add sulfuric acid to adjust the pH to 6.5, stir for 15 minutes, add magnetic species Fe dispersed in water 3 o 4 , the amount of magnetic seed is 0.3% of the dry powder weight of warm fire whole black mud, the fineness of magnetic seed is 800 mesh sieve without sieve residue, 1700r / min rotating speed is stirred and mixed for about 5min, then left to stand for 12 hours, and diluted to The water content is 80%, and then the slurry is stirred at 1700r / min for 5 minutes, and then placed in two series-connected YCJ-II-B04 permanent magnet high-gradient magnetic se...

Embodiment 3

[0032] First the whole black mud raw ore of warm fire in embodiment 1 is ground to 300 orders, weighs the fine material 15Kg that grinds in advance, is placed in a larger container and is made into water content (percentage by weight) and is 60% ore slurry, puts Stir in an agitator with adjustable speed for 15 minutes, add dissolved sodium pyrophosphate, which accounts for 0.7% of the dry powder weight of warm fire whole black mud, add hydrochloric acid to adjust the pH to 6.3, stir for 12 minutes, add magnetic species Fe dispersed in water 3 o 4, the amount of magnetic seeds is 0.2% of the weight of the dry powder of warm fire all black mud, the fineness of the magnetic seeds is to pass 800 mesh sieve without sieve residue, stir and mix at 1700r / min speed for about 5 minutes, then let stand for 15 hours, and then dilute to The water content is 85%, and then the slurry is stirred at 1700r / min for 5 minutes, and then placed in two series-connected YCJ-II-B04 permanent magnet hi...

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Abstract

The invention discloses a method for removing iron titanium from non-metallic mineral raw materials and relates to the method for removing iron titanium from the non-metallic mineral raw materials in the ceramic industry. The method comprises the steps of firstly grinding non-metallic raw ores into 250 meshes-300 meshes, preparing ore pulp with water content of 50%-70%, then adding a dispersing agent, adding a pH adjuster, regulating pH to 5.5-7.0, evenly stirring, adding magnetic seeding particles which are pre-dispersed in water, then standing for 12-24h, diluting till the water content of 80%-85% after the completion of standing, further using two permanent-magnet high-gradient magnetic separators which are connected in series for carrying out magnetic separation, collecting magnetic seeds after the ore pulp passes the magnetic separators completely, and recycling the magnetic seeds after drying. The method determines the optimum process parameters, achieves the purpose of saving energy, reducing consumption and reducing production cost under the condition of ensuring high processing efficiency of impurities of iron and titanium and has great application prospects.

Description

technical field [0001] The invention relates to a method for removing iron and titanium from mineral raw materials used in the ceramic industry, in particular to a method for removing iron and titanium from non-metallic mineral raw materials. Background technique [0002] In the past two decades, my country's ceramic industry has developed by leaps and bounds, and the output of architectural ceramics and daily-use ceramics ranks first in the world. With such a huge output of ceramics, the annual consumption of mineral raw materials in my country's ceramic industry has exceeded 100 million tons. High-quality raw materials (such as raw materials with high whiteness and excellent process performance) are increasingly in short supply. However, low- and medium-quality mineral raw materials Quality treatment is the only feasible way out to solve this contradiction. Iron impurities are harmful substances in ceramic production. If the content of iron impurities in raw materials exce...

Claims

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Application Information

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IPC IPC(8): B03C1/025B03C1/01B03C1/005
Inventor 韩辉李泽吴基球李竟先
Owner SOUTH CHINA UNIV OF TECH
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