Method for extracting gold and silver in clay-graphite crucible slag through alkali roasting
A graphite crucible and clay technology is applied in the field of alkali roasting to extract gold and silver in clay graphite crucible slag, which can solve the problems of low recovery efficiency of gold and silver, affecting the recovery and extraction of gold and silver, and achieve the effect of improving the extraction rate.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0045] 1) Use a pulverizer to crush, grind, and sieve the waste clay graphite crucible to obtain a clay graphite crucible slag powder with a particle size of 200 meshes. The content of each metal element in the clay graphite crucible slag powder obtained by analysis and detection is as follows: Au: 0.013% , Ag: 5.284%, Cu: 0.710%; weigh clay graphite crucible slag powder and sodium hydroxide according to the mass ratio of 1:1, add 2% of the total mass of clay graphite crucible slag powder, sodium hydroxide and lithium metaborate % of lithium metaborate is then mixed evenly, placed in a muffle furnace, baked at 600°C for 2 hours in an air atmosphere, then cooled naturally to room temperature, ground and pulverized into sample powder;
[0046] 2) The sample powder is stirred and cleaned with pure water for 30 minutes, and then filtered to separate the filtrate I and filter residue, and the filter residue is stirred and cleaned with a hydrochloric acid solution with a concentratio...
Embodiment 2
[0050] 1) Use a pulverizer to crush, grind, and sieve the waste clay graphite crucible to obtain a clay graphite crucible slag powder with a particle size of 150 meshes. The content of each metal element in the clay graphite crucible slag powder obtained by analysis and detection is as follows: Au: 0.013% , Ag: 5.284%, Cu: 0.710%; Weigh clay graphite crucible slag powder and sodium hydroxide according to the mass ratio of 2:1, add 0.5% of the total mass of clay graphite crucible slag powder, sodium hydroxide and lithium metaborate. % of lithium metaborate is then mixed evenly, placed in a muffle furnace, baked at 500°C for 1 hour in an air atmosphere, then cooled naturally to room temperature, ground and pulverized into sample powder;
[0051] 2) The sample powder is stirred and cleaned with pure water for 60 minutes, and then filtered to separate the filtrate I and filter residue, and the filter residue is stirred and washed with a hydrochloric acid solution with a concentrati...
Embodiment 3
[0055] 1) Use a pulverizer to crush, grind, and sieve the waste clay graphite crucible to obtain a clay graphite crucible slag powder with a particle size of 325 meshes. The content of each metal element in the clay graphite crucible slag powder obtained by analysis and detection is as follows: Au: 0.013% , Ag: 5.284%, Cu: 0.710%; Take clay graphite crucible slag powder and sodium hydroxide by mass ratio 1:2, add 3% of the total mass of clay graphite crucible slag powder, sodium hydroxide and lithium metaborate % of lithium metaborate is then mixed evenly, placed in a muffle furnace, baked at 700°C for 1.5 hours in an air atmosphere, then cooled naturally to room temperature, ground and pulverized into sample powder;
[0056] 2) The sample powder is stirred and cleaned with pure water for 120 minutes, and then filtered and separated to obtain filtrate I and filter residue, and the filter residue is stirred and washed with a hydrochloric acid solution with a concentration of 2mo...
PUM
| Property | Measurement | Unit |
|---|---|---|
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
| Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More 
PatSnap Eureka turns technology decisions into work you can execute. Powered by our Innovation Knowledge Graph, it runs expert workflows across engineering, life sciences, materials and intellectual property. Get your review-ready output in minutes.
