Ethylene Bis Stearamide,Cas 110-30-5,Ethylene Bis Stearamide Cas 110-30-5,Ethylene Bis Stearamide Ebs Jiangxi Zhilian New Materials Co., Ltd , https://www.zhilian163.com
The purpose of the test is to determine an economically rational beneficiation process and provide relevant test indicators.
The beneficiation test for the recovery of lead was carried out on the gold concentrate concentrate.
Baking mineral sands mainly hematite, quartz, illite, a small amount of pyrite, galena and copper minerals. The ore (calcined) lead grade is 3.52%, TFe34.52%, S 1.96%, Cu 0.19%.
The experiment used the flotation method, and the results were not tested by multiple schemes. Using re-election (shaker) test results, the lead concentrate grade is 18-20%, and the lead recovery rate is 26-27%. The results of magnetization roasting magnetic separation test showed that the iron concentrate grade was 53.46% and the iron recovery rate was 53.63%.
1. According to the study of ore (calcination) properties, the main components in the sample are hematite, quartz, illite, a small amount of pyrite, and galena. Lead is the main recycled mineral for this test. Due to the low melting point of lead (327 ° C), not only 95% of the lead in the calcined ore which is desulfurized by high temperature roasting is converted into lead oxide, iron is converted into sponge iron, and lead is easily bonded to the sponge iron after being melted. It is in a solid solution (or colloidal state) and is difficult to recover by flotation.
2. The ore sample (calcined) is sieved, and -500 mesh (-0.03 mm) accounts for more than 60%. The muddy phenomenon is serious. In addition, the lead oxide and the sponge iron and the gangue are intertwined, which affects the recovery rate of re-election and The main reason for the low grade.
3. There are no effects in the trial using several flotation schemes. A re-election scheme using a graded shaker and re-grinding in the mine. A lead concentrate with a lead grade of 18% or more and a recovery rate of 26% or more can be obtained.
4. Considering that the ore sample has a high iron content, the possibility of recovering iron by magnetization roasting magnetic separation is investigated under the condition that the effect of recovering lead is not good. Via multi-program test magnetic roasting, calcination at a temperature of 850 ℃, baked 90 minutes, 20% of the reductant (coal powder) condition, hierarchical roasted product, grinding the coarse fraction after magnetic separation, respectively, obtained grade And iron concentrate with a recovery rate of 53% or more. Due to the high quartz content in the ore, quartz has a close relationship with iron. Even after selection, it is difficult to improve the iron concentrate grade.