Research on Efficient Utilization of Sulphur Concentrate with Deep Flotation Method

2012 ◽  
Vol 588-589 ◽  
pp. 27-33
Author(s):  
Dan Liu ◽  
Shu Ming Wen ◽  
Qin Bo Cao ◽  
Hai Ying Shen ◽  
Jiu Shuai Deng ◽  
...  
Keyword(s):  
Steel Industry ◽  
Raw Material ◽  
Test Scheme ◽  
Efficient Utilization ◽  
High Quality ◽  
Iron Concentrate ◽  
Flotation Method ◽  
Iron Grade ◽  
Chinese Steel Industry ◽  
Iron Bearing

A technology of “depth cleaning- sulfuric and acid producing- residuals for ironmaking” is proposed for efficient utilization of sulphur concentration with high quality. The effect of the main factors involving grinding fineness, activators, collector type and dosage was investigated. On this regard, a close-circuit flotation test scheme was proceeded, by which a high quality sulphur concentrate was obtained with 52.39% of iron grade, 86.44% of iron recovery, 39.46% of sulphur grade and 91.52% of recovery sulphur. This concentrate can be directly used in the production of sulfuric acid and preparation of iron concentrate. This technology can be used to fully utilize sulphur and produce high quality concentrate as iron-bearing feed for steel industry, which will help to extend raw material sourcing for Chinese steel industry.

Comprehensive Utilization of Pyrite with High Content of Asrenic

2012 ◽  
Vol 524-527 ◽  
pp. 965-968 ◽  
Author(s):  
Dan Liu ◽  
Shu Ming Wen ◽  
Yong Jun Xian ◽  
Hai Ying Shen ◽  
Shao Jun Bai ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Steel Industry ◽  
Raw Material ◽  
High Quality ◽  
Comprehensive Utilization ◽  
Roasting Temperature ◽  
Chinese Steel Industry ◽  
Iron Bearing

A technology of “arsenic removing- sulfuric acid producing- residuals for ironmaking” is proposed for comprehensive utilization of pyrite with high content of arsenic. The effect of roasting temperature and time on arsenic removing was investigated. The arsenic removed residuals obtained under the optimal arsenic removed conditions, was used to be proceeded for sulphur volatilization test. The results demonstrate that final residuals with 63.53% of Fe can be used for steel industry. This technology can be used to fully utilize sulphur and produce high quality concentrate as iron-bearing feed for steel industry, which will help to reduce the pollution of arsenic and extend raw material sourcing for Chinese steel industry.

Arsenic Removal from Pyrite Cinders by Oxidizing Roasting with Sodium Hydroxide Addition

2014 ◽  
Vol 881-883 ◽  
pp. 1655-1659 ◽  
Author(s):  
Shao Jun Bai ◽  
Shu Ming Wen ◽  
He Fei Zhao ◽  
Chao Lv
Keyword(s):  
Sodium Hydroxide ◽  
Steel Industry ◽  
Arsenic Removal ◽  
Raw Material ◽  
Iron Concentrate ◽  
Roasting Temperature ◽  
Chinese Steel Industry ◽  
Iron Bearing ◽  
Pyrite Cinders ◽  
High Arsenic

A craft of sodium hydroxide roasting-aqueous leaching process is investigated for the treatment of a high arsenic pyrite cinders, a common by-product in vitriol industry. The pyrite cinders, containing 58.27% Fe, and 0.98% As, was conducted for the craft. The results demonstrated that iron concentrate with 58.87% Fe, 0.13% As and 87.40% of arsenic removal percentage was obtained under the optimal conditions (a roasting temperature of 1000°C, a roasting duration of 120 min and a mass ratio of sodium hydroxide to pyrite cinders of 8%).This craft can be used to utilize pyrite cinders and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of pyrite cinders and extend raw material sourcing for Chinese steel industry.

Recovery of Iron from Cyanide Residues by Carbothermic Reduction-Magnetic Separation

2014 ◽  
Vol 692 ◽  
pp. 332-336 ◽  
Author(s):  
Liang Mou Yu
Keyword(s):  
Magnetic Separation ◽  
Steel Industry ◽  
Carbothermic Reduction ◽  
Industrial Wastes ◽  
Raw Material ◽  
Iron Recovery ◽  
Cyanide Leaching ◽  
Iron Concentrate ◽  
Chinese Steel Industry ◽  
Iron Bearing

A craft of carbothermic reduction-magnetic separation process is investigated for the recovery of iron from cyanide residues, a hazardous industrial wastes when produce gold with cyanide leaching method. The cyanide residues, containing 30.12% Fe was conducted for the craft. The results demonstrated that iron concentrate with 60.25% Fe and 79.85% of iron recovery was obtained under the optimal conditions (a reduction temperature of 950°C, a reduction duration of 60 min, a pulverized coal dosage of 10% and a potassium carbonate dosage of 4%).This craft can be used to utilize cyanide residues and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of cyanide residues and extend raw material sourcing for Chinese steel industry.

Technology and Mechanism of Valuable Metal Recovery from Pyrite Cinder by Chloridizing Roasting

2012 ◽  
Vol 588-589 ◽  
pp. 1671-1676
Author(s):  
Shao Jun Bai ◽  
Shu Ming Wen ◽  
Qi Cheng Feng ◽  
Yu Chen ◽  
Jian Liu
Keyword(s):  
Steel Industry ◽  
New Technology ◽  
Metal Recovery ◽  
Raw Material ◽  
Pyrite Cinder ◽  
Valuable Metal ◽  
Zinc Compounds ◽  
Lead And Zinc ◽  
Chinese Steel Industry ◽  
Iron Bearing

A new technology of pellet production-drying-chloridizing roasting is proposed for valuable metal recovery from pyrite cinder with high content of lead and zinc. The pyrite cinder, containing 60.15% Fe, 2.02% Pb and 2.15% Zn, was pelletized with addition of 2% bentonite in pan pelletizer. Green balls after drying were roasting at 1100 °C for 60 min with 5 wt % of CaCl2 addition in tube furnace. The results demonstrate that pellets with 61.58% of TFe, lead and zinc volatile ratios of 98.02% and 96.83% were obtained. Key technique is that CaCl2 reacts with lead and zinc compounds and the chloride can be volatilized at moderate temperatures. This new technology can recover the valuable metal fully from pyrite cinder and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of pyrite cinder and extend raw material sourcing for Chinese steel industry.

Treatment of Pyrite Cinders for Arsenic Removal Using Acid Leaching Process

2013 ◽  
Vol 634-638 ◽  
pp. 3541-3544
Author(s):  
Shao Jun Bai ◽  
Shu Ming Wen ◽  
He Fei Zhao ◽  
Qin Bo Cao ◽  
Hai Ying Shen ◽  
...  
Keyword(s):  
Steel Industry ◽  
Arsenic Removal ◽  
Acid Leaching ◽  
Raw Material ◽  
Pyrite Cinder ◽  
Iron Concentrate ◽  
Solid Ratio ◽  
Leaching Process ◽  
Chinese Steel Industry ◽  
Sulphuric Acid Concentration

A craft of concentrated acid-heating reinforced leaching process is investigated for the treatment of a high arsenic pyrite cinder, a common by-product in vitriol industry. The pyrite cinder, containing 57.37% Fe, and 2.78% As, was conducted for the acid leaching process. The results demonstrated that iron concentrate with 60.57% Fe, 0.28% As and 96.23% of iron recovery was obtained under the optimal acid leaching conditions(Sulphuric acid concentration is a mass ratio of 20%, a leaching temperature of 60°C, a liquid-solid ratio of 2:1 and a leaching time of 120 min).This craft can be used to utilize pyrite cinder and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of sulfuric acid residue and extend raw material sourcing for Chinese steel industry.

Comprehensive Utilization of Sulfuric Acid Residue with High Content of Copper by Pellet Production-Drying-Chloridizing Roasting

2012 ◽  
Vol 524-527 ◽  
pp. 2004-2010
Author(s):  
Shao Jun Bai ◽  
Shu Ming Wen ◽  
Jiu Shuai Deng ◽  
Dan Liu ◽  
Yu Chen
Keyword(s):  
Sulfuric Acid ◽  
Steel Industry ◽  
New Technology ◽  
Raw Material ◽  
Comprehensive Utilization ◽  
Pellet Production ◽  
Copper Compounds ◽  
Simultaneous Decrease ◽  
Chinese Steel Industry ◽  
Iron Bearing

A new technology of pellet production-drying-chloridizing roasting is proposed for comprehensive utilization of sulfuric acid residue with high content of copper, a common by-product in vitriol industry. The sulfuric acid residue, containing 60.27% Fe, and 1.61% Cu, was pelletized with addition of 5% bentonite in pan pelletizer. Green balls after drying with 2.3% of water retention were roasting at 1100 °C for 30 min with 5 wt % of CaCl2addition in tube furnace. The results demonstrate that pellets with 60.58% of TFe, a copper volatite ratio of 97.8% were obtained with simultaneous decrease in the copper content down to 0.035%. Key technique is that CaCl2reacts with copper compounds and the chloride can be volatilized at moderate temperatures. This new technology can be used to fully utilize sulfuric acid residue and produce qualified concentrate as iron-bearing feed for steel industry, which will help to solve the pollution of sulfuric acid residue and extend raw material sourcing for Chinese steel industry.

Stepped-Flotation of Mixed Magnetic Concentrate Carbonates-Containing in Donganshan

2012 ◽  
Vol 454 ◽  
pp. 292-298
Author(s):  
An Lin Shao
Keyword(s):  
Negative Influence ◽  
Total Iron ◽  
Closed Circuit ◽  
Reverse Flotation ◽  
Iron Recovery ◽  
High Quality ◽  
Iron Concentrate ◽  
Iron Grade ◽  
Hematite Concentrate

There are nearly 500 million tons of hematite ores carbonate-containing in Donganshang, China. However, the flotation flowsheet previously of in that area was seriously affected by the siderite. Therefore, many ores could not be processed by ordinary methods. In this study, mixed magnetic concentrate in scene was beneficiated by stepped-flotation, in which siderite was separated in first direct flotation step to eliminate its negative influence on hematite flotation, and then the high quality hematite concentrate could be obtained by second reverse flotation step. When the feed was mixed magnetic concentrate in scene with total iron grade of 42.84% and siderite content of 4.04%, an iron concentrate with iron grade of 67.84% and iron recovery of 69.47% was obtained in closed circuit of stepped-flotation.

Floatation Separation Research on Siderite-Containing Iron Concentrate

2010 ◽  
Vol 92 ◽  
pp. 103-109
Author(s):  
Wan Zhong Yin ◽  
Yue Xin Han ◽  
Feng Xie
Keyword(s):  
Iron Ore ◽  
Mining Operation ◽  
Second Step ◽  
High Quality ◽  
Iron Carbonate ◽  
Flotation Process ◽  
Iron Concentrate ◽  
Iron Grade

With the development of mining operation, the content of iron carbonate typically siderite increases evidently in the iron ore produced in Dong Anshan floatation plant, China. The presence of siderite significantly decreases the iron grade in the concentrate produced by the current reverse anionic flotation process. The study shows that the floatability of hematite, siderite and quartz differs with an increase of pH by using the combination of starch and CaCl2 as depressant. A two-step flotation process has been developed to treat Dong Anshan iron ore by which siderite was removed in the first step floatation and in the second step, reverse anionic flotation was used to produce high quality iron concentrate.

Experimental Study on Magnetic Roasting of Low Grade Specularite

2012 ◽  
Vol 454 ◽  
pp. 189-193
Author(s):  
Li Mei Bai ◽  
Bo Liu ◽  
Yu Hao ◽  
Xiao Liang Zhang ◽  
Yu Xin Ma
Keyword(s):  
Steel Industry ◽  
Iron Ore ◽  
Low Grade ◽  
Paper Study ◽  
Iron Concentrate ◽  
Low Intensity ◽  
Self Sufficiency ◽  
Roasting Temperature ◽  
Chinese Steel Industry ◽  
Ore Grade

Along with the continuously rose of the iron ore price and the Chinese iron ore quantity demanded, Iron ore self-sufficient rate has become the bottleneck of Chinese steel industry development. In order to increase Chinese ore self-sufficiency rate, the paper study the xinjiang region low grade specularite. When the crude ore grade is 35%, the mass percent of reducing agent pulverized coal is 12%, roasting temperature is 800°C，roasting time is 50 min, milling fineness is 90% passing 0.074 mm and the magnetic induction is 84kA/m, after a low intensity magnetic separation, the iron concentrate can be got whose yield is 42.83%, grade is 62.04% and recovery is 79.26%.

Processing of Sulphur Concentrate with High Quality by Flotation

2012 ◽  
Vol 524-527 ◽  
pp. 1029-1036 ◽  
Author(s):  
Yong Jun Xian ◽  
Shu Ming Wen ◽  
Jiu Shuai Deng ◽  
Jian Liu ◽  
Dan Liu ◽  
...  
Keyword(s):  
Yunnan Province ◽  
Test Scheme ◽  
High Quality ◽  
Slurry Concentration ◽  
Main Factors ◽  
Sulphur Recovery ◽  
Iron Grade

Based on the analysis of the properties of the ore from Weixin area in Yunnan province, a suitable technical route was presented for the processing of sulphur concentrate with high quality. The main factors i.e. grinding fineness, pH, collector type and dosage, affecting the quality of roughing concentrate was investigated. On this basis, a close-circuit flotation test scheme was proceeded, which obtained a high quality sulphur concentrate with sulphur grade of 51.58%, sulphur recovery of 99.22%, iron grade of 45.14% and impurities content of 3.28%. In addition, a decrease of slurry concentration of cleaning further increase the quality of sulphur concentrate, which contained 52.82% sulphur, 45.29% iron and 1.89% impurities.

Sign in / Sign up

Export Citation Format

Share Document