Dephosphorization method of phosphorus-containing iron ore
A technology for dephosphorization of iron ore, applied in the direction of improving process efficiency, etc., can solve problems such as poor dephosphorization effect, and achieve low dephosphorization cost and good dephosphorization effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0013] Example 1, referring to the attached drawings, the iron ore with a phosphorus content of 1.12% was crushed to a particle size less than 0.074mm, and 10% of the pyrite with a particle size less than 0.074mm was added to the phosphorus-containing iron ore by mass percentage. The 9K medium solution adjusts the mass concentration of the pulp to 10%, and adds 5% of Thiobacillus ferrooxidans (Tf bacteria) broth according to the mass percentage. The initial pulp pH is 2.2. Under the condition of leaching for 35 days, the dephosphorization rate reaches 68.81%. ; When the pyrite content is increased to 20%, the dephosphorization rate is 78.84%.
Embodiment 2
[0014] Example 2, referring to the attached drawings, the iron ore with a phosphorus content of 1.12% was crushed to a particle size less than 0.074mm, and 20% of the pyrite with a particle size less than 0.074mm was added to the phosphorus-containing iron ore as a percentage by mass. The 9K medium solution adjusts the mass concentration of the pulp to 15%, and adds 5% Tf bacteria liquid according to the mass percentage. When the initial pulp pH is 1.7 and 2.0, the dephosphorization rate reaches 86.68% and 86.63 after 45 days of leaching. %; When the pH is lower than 1.5, it is difficult for bacteria to survive; when the pH is 3.5, the dephosphorization rate drops to 78%.
Embodiment 3
[0015] Example 3, referring to the attached drawings, the iron ore containing 1.12% phosphorus was crushed to a particle size less than 0.074mm, and 20% of the pyrite with a particle size less than 0.074mm was added to the phosphorus-containing iron ore by mass percentage. The 9K medium solution adjusts the pulp mass concentration to 20%, the initial pulp pH is 2.2, and under the condition of 45 days of leaching, when the Tf bacterial liquid inoculum is increased from 2% to 5% by mass percentage, the dephosphorization rate will be 67.70 % Increased to 78.84%; and when the Tf bacterial solution inoculation amount increased from 5% to 10%, the dephosphorization rate of ore only increased from 78.84% to 79.95%.
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More