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Application of rhodococcuserythropolis in separation of hematite and separation method thereof

A technology of rhodococcus and hematite, which is applied to hematite. , In the field of Rhodococcus erythrococcus, it can solve the problems of small harvesting capacity and few research results

Inactive Publication Date: 2012-06-13
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In 2008, Japanese Mohsen Farahat et al. reported the difference in the flotation behavior of Escherichia coli to quartz, hematite, and corundum. The harvesting capacity is very small
[0006] Compared with foreign countries, there is a big gap in domestic research on the application of microbial collectors, and there are very few research results

Method used

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  • Application of rhodococcuserythropolis in separation of hematite and separation method thereof
  • Application of rhodococcuserythropolis in separation of hematite and separation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025]Hematite with a purity of 97.6%, 99.9% quartz, 99% apatite and 99% kaolin, all of which are ground to -30μm in particle size, when the pH of the slurry is 6, the dosage of water glass is 150g / t, and the dosage of Rhodococcus erythrococcus is 65g Flotation was carried out under the conditions of 1 / t and 20 g / t of foaming agent, and the yields of the floating products obtained were 86.02%, 20.28%, 25.68% and 22.19%, respectively. The yield of hematite is significantly higher than that of quartz, apatite and kaolin, which are 65.74%, 60.39% and 63.83%, respectively. Microscopic observation shows that: Rhodococcus red city has obvious flocculation effect on hematite, but little flocculation effect on quartz, apatite and kaolin. It is precisely because the formation of hematite flocs creates a particle size condition that is conducive to hematite flotation, and a higher single mineral flotation yield is obtained.

Embodiment 2

[0027] The particle size is -30μm, the hematite (containing 68.28% iron) with a purity of 97.6% and the quartz with a purity of 99.9% are mixed in a weight ratio of 1:1 to form a mixed ore containing 31.23% iron. Flotation was carried out under the conditions of 70g / t of Rhodococcus erythrococcus and 20g / t of frother. The iron grade of the obtained iron concentrate was 51.63%, and the iron recovery rate was 71.14%. Microscopic observation shows that: the hematite in the iron concentrate exists in the form of flocs, and the quartz appears in the hematite flocs in the form of fine particles.

Embodiment 3

[0029] The particle size is -30μm, and the hematite (containing iron 68.28) with a purity of 97.6% and kaolin with a purity of 99% are mixed in a weight ratio of 1:1 to form a mixed ore containing 33.45% iron. The pH of the slurry is 5.5, and the amount of water glass is 150g Flotation was carried out under the conditions of 70g / t of Rhodococcus erythrococcus and 20g / t of frother. The iron grade of the obtained iron concentrate was 49.21%, and the iron recovery rate was 77.13%. Microscopic observation shows that the hematite in the iron concentrate exists in the form of flocs, and the kaolin is entrained in the hematite flocs in the form of fine particles.

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Abstract

The invention belongs to the field of ore dressing chemicals and relates to a microorganism collector, namely rhodococcuserythropolis, which has double functions of flocculation and flotation against micro-fine-grained hematite and is used for separating the hematite in micro-fine-grained hematite ore. A method for separating the hematite in the micro-fine-grained hematite ore by using the rhodococcuserythropolis is characterized in that the rhodococcuserythropolis which has an obvious selective flocculation-flotation effect against the hematite is used for separating the hematite in the micro-fine-grained hematite ore in the method. The separation steps are as follows: firstly performing orientational culture on the rhodococcuserythropolis through the hematite to reinforce the selective effect against the hematite; and then separating the hermatite from the micro-fine-grained hematite ore through the well cultured rhodococcuserythropolis. Compared with the conventional collector of the hematite, the microorganism collector disclosed by the invention is not only low in using quantity of the chemical and pollution-free, but also fast in filtering speed of ore concentrate and low in loss of the micro-fine-grained hematite.

Description

technical field [0001] The invention belongs to the field of beneficiation agents, and relates to a microbial collector, Rhodococcus erythropolis, which has dual functions of flocculation and flotation on fine-grained hematite, and is used for separating fine-grained hematite Hematite. Background technique [0002] my country is a country with large iron ore resources in the world. According to the annual report Mineral Commodity Summaries 2010 published by the U.S. Geological Survey in January 2010, China’s iron ore reserves reached 22 billion tons, accounting for 13.8% of the world’s total iron ore reserves, ranking first in the world. The third place in the world. However, the grade of iron ore in my country is low, and the reserves of lean ore account for more than 80% of the total reserves. In particular, the reserves of hematite in my country are large, but the grade is low, generally only about 30%, and the embedded particle size is fine and the combination form is co...

Claims

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Application Information

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IPC IPC(8): B03D3/06
Inventor 杨慧芬王峰肖晶晶张露王传龙唐琼瑶
Owner UNIV OF SCI & TECH BEIJING
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