A method of using iron tailings to solidify copper tailings to make mine filling materials
A technology of filling materials and copper tailings, which is applied in the direction of cement production, etc., can solve problems such as shackles, achieve the effects of simple operation, increase value, and reduce filling costs
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0021] Example 1 Determination of strength and leaching toxicity of test pieces made of different mass parts mixing ratios
[0022] Dry the iron tailings, copper tailings and bauxite at a constant temperature until the moisture is less than 2%, mechanically grind the dried tailings for 2 hours and sieve them, and remove the Na 2 CO 3 Mix with KOH powder at a mass ratio of 1:2 to make a mixed activator, and grind the mixed activator to less than 200 mesh, and take iron tailings, copper tailings, mixed activator and bauxite in parts by mass (20, 70, 2, 8), (30, 60, 8, 2), (25, 65, 5, 5), (23, 67, 4 5 parts, 6 parts), (27 parts, 63 parts, 6 parts, 4 parts) 5 groups and stirred evenly, put the mixed sample of each group in the furnace and calcined at a high temperature of 500 ° C for 60 minutes, after the calcination was completed, the temperature in the furnace was After cooling down to room temperature, take out the activated mixture, add water to the mixture at a liquid-solid...
Embodiment 2
[0026] Example 2 Determination of strength and leaching toxicity of specimens prepared with mixed activators prepared in different mass ratios
[0027] Dry the iron tailings, copper tailings and bauxite at a constant temperature until the moisture is less than 2%, mechanically grind the dried tailings for 2 hours and sieve them, and remove the Na 2 CO 3 Mix with KOH powder at a mass ratio of 1:2, 1:3, and 1:4 to make mixed activators respectively, and grind the mixed activators to less than 200 meshes to prepare 3 mixed activators, and then in parts by mass Take 20 parts, 70 parts, 2 parts, and 8 parts of iron tailings, copper tailings, mixed activator and bauxite respectively and stir them evenly. Put the mixed samples of each group in the furnace and calcinate at a high temperature at 500 ° C. 60min, after the calcination is completed, after the temperature in the furnace drops to room temperature, take out the activated mixture, add water to the mixture at a liquid-solid m...
Embodiment 3
[0031] Example 3 Orthogonal experiment of preparing specimens under different process conditions
[0032]In this example, the effects of tailings grinding time, calcination temperature and liquid-solid ratio on the uniaxial compressive strength and heavy metal leaching toxicity of the prepared test piece are discussed through orthogonal experiments. Dry the iron tailings, copper sulfide tailings and bauxite at a constant temperature until the moisture content is less than 2%, mechanically grind and screen the dried tailings, and set the grinding time to 1h, 2h and 3h respectively. Mix Na2CO3 and KOH powders at a mass ratio of 1:4 to make a mixed activator, and grind the mixed activator to less than 200 mesh. In terms of parts by mass, 20 parts, 70 parts, 2 parts and 8 parts of iron tailings, copper tailings, mixed activator and bauxite were respectively taken and stirred evenly, and the mixed samples were placed in the furnace for calcination. The settings are 350°C, 500°C an...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| compressive strength | aaaaa | aaaaa |
| compressive strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More