Effects of silicate-bacteria pretreatment on desiliconization of magnesite by reverse flotation

Ten strains of silicate bacteria were screened from three bauxite samples in Jiangxi Province and Henan Province in China. The ten strains were determined as B. mucilaginosus according to the results of physiological and biochemical characteristics and desilicon ability. Bioleaching tests showed that the ten strains all can decompose bauxite ore and release silicon from bauxite, but had a large difference of desilicon ability among them.

Download Full-text

Screening and Desilication of a Silicate Bacteria

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.236-238.253 ◽

2011 ◽

Vol 236-238 ◽

pp. 253-257

Author(s):

Xian Zhen Zhang ◽

De Si Sun ◽

Hai Lin

Keyword(s):

Particle Size ◽

Incubation Time ◽

Ph Value ◽

Solution Temperature ◽

Optimum Conditions ◽

Initial Ph ◽

Silicate Bacteria ◽

Bauxite Ore

The strain Jgj-1 was isolated from Gaoan bauxite ore. The relations of desilication of the strain Jgj-1 and the pH of solution, temperature, shaking speed, incubation time, particle size were investigated. The results shows the optimum conditions of bioleaching are as following: at 28°C, initial pH value is 7.2, particle size 0.056mm, 200rpm shaking speed, incubation 5-7 days.

Download Full-text

Evaluation of quaternary phosphonium salt as the collector in bauxite reverse flotation

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2017.08.046 ◽

2017 ◽

Vol 5 (5) ◽

pp. 4494-4496 ◽

Cited By ~ 1

Author(s):

Jihua Zhai ◽

Pan Chen ◽

Wei Sun ◽

Yuehua Hu ◽

Tong Yue ◽

...

Keyword(s):

Phosphonium Salt ◽

Reverse Flotation ◽

Quaternary Phosphonium Salt

Download Full-text

Study on the Concentration of a Carbon-Containing Oolitic Low-Grade Collophane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.900.681 ◽

2014 ◽

Vol 900 ◽

pp. 681-684

Author(s):

Wan Chao Jin ◽

Ping Zhou ◽

Hai Yun Xie ◽

Wei Tan ◽

Bo Wen Yang

Keyword(s):

Low Grade ◽

Reverse Flotation ◽

Valuable Component

Apatite is a valuable component of the collophane taken from Yunnan, as it is in the shape of oolith and contains a lot of carbon, and hence an effective benefication of the apatite is difficult to be occurred by means of concentration. Based on the results of both direct and reverse flotation tests, it shows that reverse flotation is effective in the benefication of the apatite to a certain extent. When reverse flotation is employed to treat the run-of-mine at a grade of 18.77%, the concentrate containing P2O5 24.04% at a recovery of 62.58% can be produced.

Download Full-text