The Development of Preconcentration Technology in Low-Grade Magnetite’s Beneficiation

2011 ◽  
Vol 361-363 ◽  
pp. 324-327
Author(s):  
Chun Hong Xu
Keyword(s):  
Magnetic Separation ◽  
Steel Industry ◽  
Iron Ore ◽  
Separation Process ◽  
Low Grade ◽  
High Grade ◽  
Separation Technology ◽  
Great Progress ◽  
Dry Magnetic Separation ◽  
Production Practices

Exhaustion of high-grade magnetite resources and large demand for iron ore in the rapidly developing steel industry promotes the mining enterprises to exploit low-grade magnetite. Low-grade magnetite with a low content of valuable minerals is hard to be separated with the conventional separation process flow because of its high beneficiation costs. By preconcentration technology, enriching valuable minerals and discarding large amounts of gangue as soon as possible before grinding, low beneficiation costs can be achieved in low-grade magnetite’s beneficiation. After continuous researches and production practices and the development of relevant efficient crushing and separating equipments, preconcentration technology has made great progress: from crushing-dry magnetic separation technology to grinding-wet magnetic separation technology, then to ultrafine crushing-wet magnetic separation technology. Now preconcentration has become an indispensable stage in low-grade magnetite’s beneficiation.

Application of Super Conducting High Gradient Magnetic Separation Technology on Resource Utilization of Low Grade Iron Ore

2014 ◽  
Vol 968 ◽  
pp. 168-172 ◽  
Author(s):  
Hai Tao Wen ◽  
Su Qin Li ◽  
Chang Quan Zhang ◽  
Wei Wei
Keyword(s):  
Magnetic Separation ◽  
Steel Industry ◽  
Iron Ore ◽  
Environmental Problems ◽  
Low Grade ◽  
Magnetic Separator ◽  
High Gradient Magnetic Separation ◽  
High Gradient ◽  
Separation Technology ◽  
Super Conducting

Nowadays, steel industry develops rapidly. However, lots of iron ore needed by China’s steel industry are imported from abroad. China’s dependence on foreign iron ore exceeds 70%. As a result, not only have large amounts of foreign currencies been spent but also a potential threat has been posed to the economic development of our country. Therefore, it is necessary for China to serve its economic production with lots of low grade iron ore. Since traditional beneficiation methods can cause serious environmental problems, High gradient magnetic separation(HGMS) is discussed in this paper. It can recycle tailings when disposing of low grade iron ore as well as solve the environmental problems caused by tailings and arising during the production process. Besides, high gradient magnetic separator can also raise the processing efficiency of low grade iron core. Therefore, high-gradient magnetic separation can not only increase economic returns but also protect ecological environment. With the maturity of super-conduction high gradient magnetic separation technology, super-conducting high gradient magnetic separation will produce better production effects.

Research on Exploration of Mineral Processing for a Iron Ore

2015 ◽  
Vol 1094 ◽  
pp. 397-400
Author(s):  
Xian Xie ◽  
Zi Xuan Yang ◽  
Xiong Tong ◽  
Ji Yong Li
Keyword(s):  
Magnetic Separation ◽  
Calcium Oxide ◽  
Iron Ore ◽  
Mineral Processing ◽  
Low Grade ◽  
Iron Minerals ◽  
Iron Mineral ◽  
Ore Minerals ◽  
Separation Test

Iron ore minerals are mainly silicate-type iron minerals in raw ore, and its distribution rate was 51.93%; followed by magnetic iron, and its distribution rate was 36.81%; content and distribution rate of other minerals was very low; element grade of iron, phosphorus, sulfur, silica were 11.90%, 0.043%, 0.013% and 45.23%, the main gangue were silica and calcium oxide, recyclable iron minerals mainly is magnetic iron mineral. Due to the grade of iron of raw ore and the amounts of optional magnetite was relatively little, in order to investigate the optional of low-grade ore, weak magnetic separation test and weak magnetic separation tailings-strong magnetic separation test were put into effect.

Pilot Beneficiation about Deoxidized Samples of Bayan Obo Oxidized Iron Ore

2012 ◽  
Vol 454 ◽  
pp. 221-226 ◽  
Author(s):  
Peng Gao ◽  
Yue Xin Han ◽  
Yong Sheng Sun ◽  
Yu Fan Mu
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Ferrous Metal ◽  
Fine Fraction ◽  
Separation Process ◽  
Process Flow ◽  
Oxidized Iron ◽  
Separate Treatment ◽  
Bayan Obo ◽  
Process Characteristic

The composition of Deoxidized Samples of Bayan Obo Oxidized Iron Ore is complex with high content of residual reducing C, Fe phase in the RDP is ferrous metal what is hard and malleable resulting in pessimistic grindability. Gravity-magnetic separation process flow is adopted with C pre-rejecting, stage grinding (-0.074mm -57.18%, -0.074mm -85.66%) and coarse-fine fraction separate treatment base on RDP process characteristic. The final concentrate has 92.02% Fe with 93.27% Fe recovery, 94.18% Fe metallization which may utilize as rough materials for steelmaking and the final tailings has 15.10% REO with 97.15% REO recovery which may utilize as rough materials for REO concentration.

Analysis of Wet High-Intensity Magnetic Separation of Low-Grade Indian Iron Ore using Statistical Technique

2012 ◽  
Vol 47 (8) ◽  
pp. 1129-1138 ◽  
Author(s):  
S. I. Angadi ◽  
Ho-Seok Jeon ◽  
A. Mohanthy ◽  
S. Prakash ◽  
B. Das
Keyword(s):  
Magnetic Separation ◽  
High Intensity ◽  
Iron Ore ◽  
Statistical Technique ◽  
Low Grade

Optimal Recovery of Iron Values from a Low Grade Iron Ore using Reduction Roasting and Magnetic Separation

2014 ◽  
Vol 49 (12) ◽  
pp. 1927-1936 ◽  
Author(s):  
S. S. Rath ◽  
H. Sahoo ◽  
N. Dhawan ◽  
D. S. Rao ◽  
B. Das ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Iron Ore ◽  
Optimal Recovery ◽  
Low Grade ◽  
Reduction Roasting

Flotation to Recover Copper Minerals from a Low-Grade Copper-Bearing Iron Ore

2012 ◽  
Vol 549 ◽  
pp. 998-1001
Author(s):  
Si Qing Liu ◽  
Peng Li ◽  
Shu Ming Wen ◽  
Dian Wen Liu
Keyword(s):  
Magnetic Separation ◽  
Phase Analysis ◽  
Iron Ore ◽  
Processing Technology ◽  
Raw Material ◽  
Low Grade ◽  
Copper Concentrate

Large amount of sourrounding rocks in Jianshui China has been discarded for many years, and the “rock” is characterized by Cu-Fe polymetallic constituents and of low grade. According to the results of chemical and phase analysis as well as the mineralogy, a joint pocess of flotation and magnetic separation was proposed and used to process the ore. Flotation results show that the combined processing technology is efficient in utilizing the low grade rocks. A copper concentrate assaying 20.68% Cu at the recovery of 80.11% can be obtained, when the raw material assays 0.79% Cu.

Low Grade of Kyanite Ore Beneficiation Experimental Research in Xingtai

2012 ◽  
Vol 602-604 ◽  
pp. 115-119
Author(s):  
Jin Xia Zhang ◽  
Qi Hui Dai ◽  
Li Nan Tian ◽  
Xing Guo Wang
Keyword(s):  
Chemical Composition ◽  
Magnetic Separation ◽  
Experimental Research ◽  
High Intensity ◽  
Raw Material ◽  
Low Grade ◽  
High Grade ◽  
Market Demand ◽  
Low Intensity ◽  
Mineral Constituent

As high-grade refractories raw material，kyanite is widely used and the market demand is increasingly greater. To identify the process mineralogical properties of kyanite from Heibei so as to provide a mineralogical basis for its chemical composition, mineral constituent，ores texture and structure and so on. The results show that: the kyanite Al2O3 21.50%, SiO2 52.87%, using high intensity magnetic separation-gravity separation-flotation folwsheet. Experiments show that, the grinding fineness of -200 mush 65%, with strong intensity magnetic separation, magnetic concentrate by shaking the low intensity magnetic separation，we can get magnetite, garnet, biotite and phlogopite four concentrates, strong magnetic ore tailings consolidated by a rocking bed mud thrown first, refined through flotation, won Kyanite concentrate grading about 56.11% at a recovery of 49.90%.

Experimental Study of Sichuan Lithium Polymetallic Ore

2014 ◽  
Vol 644-650 ◽  
pp. 5455-5458
Author(s):  
Xiang Kun Wang ◽  
Xiong Tong ◽  
Yu De Gao
Keyword(s):  
Experimental Study ◽  
Magnetic Separation ◽  
Gravity Separation ◽  
Low Grade ◽  
High Grade ◽  
Comprehensive Recovery ◽  
Polymetallic Ore

Based on the study of lithium polymetallicdeposits, a series tests such as flotation, Magnetic separation and Gravity separation were carried out on Comprehensive recovery. According to this bases,a way for lithium polymetallic’sComprehensive recovery are found out, which obtaneda fine quality Lithiumconcentrate, high grade tantalum, niobium concentrate, they grade are 5.96%,14.13% and 19.66%and even gained low grade tantalum,niobiumconcentrate the grade are 1.53%,2.28%.

Sign in / Sign up

Export Citation Format

Share Document