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Method for dissolving mid-low-grade rock phosphate by utilizing thermoacidophile

A kind of acidophilus, low-grade technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, phosphate material treatment, etc., can solve the problems of low phosphorus dissolution rate and long phosphorus dissolution period, so as to improve economic benefits, The effect of saving cooling costs and maintaining the sustainable development of my country's agriculture

Inactive Publication Date: 2011-09-07
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on the use of autotrophic bacteria to dissolve medium and low-grade phosphate rocks is still in its infancy, and the strains used are limited to Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, etc. Mesophilic mesophilic acidophilus, the phosphorus dissolution rate is low, and the phosphorus dissolution cycle is long

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A method for dissolving medium and low-grade phosphate rock powder utilizing thermoacidophilic bacteria, which comprises the following steps:

[0030] 1) Activation of the original bacteria liquid of thermoacidophilic bacteria: according to the addition amount of the original bacteria liquid of thermoacidophilic bacteria is 15% of the volume of the medium, select the original bacteria liquid and culture medium of acidophilic thermophilic bacteria; into a container (such as a conical flask), adjust the pH of the medium to 2.5 with sulfuric acid with a concentration of 10 wt%, and then add the original bacterial solution of thermoacidophilic bacteria; then place the container in a constant temperature shaker at 45 ° C, at 140 rpm Vibration cultured under the condition of / min for 5 days to obtain activated bacterial solution A (the activated bacterial solution A of the first activation);

[0031] Then press the addition amount of the activated bacterial solution A to be 1...

Embodiment 2

[0042] A method for dissolving medium and low-grade phosphate rock powder utilizing thermoacidophilic bacteria, which comprises the following steps:

[0043] 1) Activation of the original bacteria liquid of thermoacidophilic bacteria: according to the addition amount of the original bacteria liquid of thermoacidophilic bacteria is 20% of the volume of the medium, select the original bacteria liquid of acidophilic thermophilic bacteria and the culture medium; into a container (such as a conical flask), adjust the pH of the medium to 2.8 with sulfuric acid with a concentration of 15wt%, and then add the original bacterial solution of thermoacidophilic bacteria; then place the container in a constant temperature shaker at 50°C, at 120 rpm Under the condition of shaking culture for 4 days per minute, the activated bacterial liquid A was obtained;

[0044] Press the addition amount of the activated bacterial solution A to be 20% of the volume of the medium, select the activated bac...

Embodiment 3

[0053] A method for dissolving medium and low-grade phosphate rock powder utilizing thermoacidophilic bacteria, which comprises the following steps:

[0054] 1) Activation of the original bacteria liquid of thermoacidophilic bacteria: according to the addition amount of the original bacteria liquid of thermoacidophilic bacteria is 12% of the volume of the medium, select the original bacteria liquid and culture medium of acidophilic thermophilic bacteria; into the container, adjust the pH of the medium to 2.2 with sulfuric acid with a concentration of 20wt%, and then add the original bacterial solution of thermoacidophilic bacteria; then place the container in a constant temperature shaker at 42°C, and shake at 130 rpm. Cultivate for 4 days to obtain activated bacterial liquid A;

[0055] Press the addition amount of the activated bacterial solution A to be 12% of the volume of the medium, select the activated bacterial solution A and the medium; the medium is loaded into the c...

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Abstract

The invention relates to a method for dissolving mid-low-grade rock phosphate by utilizing thermoacidophile. The method is characterized by comprising the following steps: 1) activating the original thermoacidophile liquid to obtain activated thermoacidophile liquid; 2) domesticating the obtain activated thermoacidophile liquid to obtain domesticated thermoacidophile liquid; and 3) putting a culture medium into a container and adding pyrite powder and mid-low-grade rock phosphate to obtain culture liquid C, adjusting the pH value of the culture liquid C to be 2.0-3.0 with sulfuric acid with concentration being 10-20wt% and then adding the domesticated thermoacidophile liquid; and then putting the container in a shaker at the constant temperature of 40-55 DEG C and carrying out shaking culture at a speed of 120-180r / min for 15-20 days to obtain soluble phosphorus. The method has the characteristics of high phosphorus solubility, simple process and low production cost.

Description

technical field [0001] The invention relates to a method for dissolving medium and low-grade phosphate rock powder by using thermoacidophilic bacteria. Background technique [0002] In recent years, the research on the use of microbial technology to treat mineral resources is very active, and the microbial leaching of copper, uranium, and gold has achieved industrial applications. As an environmentally friendly and efficient metallurgical method, microbial leaching has gradually become the mainstream of modern metallurgical technology research, and has the advantages of low cost, simple operation, and environmental protection. [0003] Phosphorus is a very important nutrient element in plant growth and development. It exists in large amounts in phosphate rocks. Its main mineral forms are hydroxyapatite, fluorapatite and carbonate apatite, etc., which constitute the phosphate rock. main ingredient. These ores provide cheap raw materials for the production of phosphate ferti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/01C12S99/00C12R1/01
Inventor 肖春桥池汝安张华香方玉娟
Owner WUHAN INSTITUTE OF TECHNOLOGY
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