Application of Intensifying Secondary Concentration Technology in Reverse Flotation of Bauxite

2012 ◽  
Vol 161 ◽  
pp. 6-10 ◽  
Author(s):  
Xiao Lin Zhang ◽  
Jian Jun Fang ◽  
Dian Wen Liu
Keyword(s):  
Recovery Rate ◽  
Fine Particle ◽  
Mineral Processing ◽  
Processing Method ◽  
New Method ◽  
Guizhou Province ◽  
Reverse Flotation

In order to resolve the problem of fine particle flotation in the reverse flotation of bauxite. a new method of intensifying secondary concentration technology was firstly advanced, and author applied it to ore, achieved eximious experimentation index. The reverse flotation tests of intensifying secondary concentration aiming at bauxite from Guizhou province were studied. The results show that diaspore concentrate directly used in the Bayer-mineral processing method can be obtained by using the intensifying secondary concentration technology without pre—desliming. The average A/S of the concentrate is 10.28 with a recovery rate of 85.41%.

Experimental Study on the Recovery of the Zinc from Iron Tailings in Hebei

2013 ◽  
Vol 641-642 ◽  
pp. 256-261
Author(s):  
Qing Mei Jia ◽  
Feng Jiu Li ◽  
Hui Jing Wang
Keyword(s):  
Experimental Study ◽  
Copper Sulfate ◽  
Mineral Processing ◽  
Reverse Flotation ◽  
Butyl Xanthate ◽  
Zinc Concentrate

This article conducts mineral processing experimental study on a certain iron tailing ore in Hebei. According to the ore characteristics, the final flowsheet of stage grinding - weak magnetic - strong magnetic - anionic reverse flotation is determined to sort the ore. Under the conditions that grinding fineness is -200 mesh accounting for 60.0%, collector is butyl xanthate and activator is copper sulfate, this test can obtain zinc concentrate that grade is 36.25% and recovery is 84.15%

Detection Study on the Mineral Processing Reagents Preparation from Catering Waste Oil and Application on Ore Flotation

2013 ◽  
Vol 699 ◽  
pp. 119-125
Author(s):  
Hui Mei Yu ◽  
Hua Jun Wang ◽  
Ai Fei Yi
Keyword(s):  
Fatty Acid ◽  
Functional Groups ◽  
Unsaturated Fatty Acid ◽  
Iron Ore ◽  
Mineral Processing ◽  
Reverse Flotation ◽  
Waste Oil ◽  
Field Production

The composition of catering waste oil is similar to that of traditional materials for the preparation of fatty acid collectors, which makes it possible to change catering waste oil into fatty acid collector applied to ore flotation. The collectors which come from catering waste oil are detected by FTIR and GC-MS analyses. The FTIR date shows that collectors contains lively carboxyl functional groups and The GC-MS date reveals that those carboxyl functional groups exist in single unsaturated fatty acid and three unsaturated fatty acid. The collectors can be applied to iron ore reverse flotation, apatite flotation, and fluorite flotation. It has better flotation experiment results than the traditional collector that using in field production.

New method for the reconstruction of the distribution of fine particle magnetic moments in a ferrofluid

1999 ◽  
Vol 35 (5) ◽  
pp. 4064-4066 ◽  
Author(s):  
D.V. Berkov ◽  
A. Daum ◽  
P. Gornert ◽  
N. Buske ◽  
C. Gansau ◽  
...  
Keyword(s):  
Fine Particle ◽  
Magnetic Moments ◽  
New Method

scholarly journals ALTERNATIVE TO FOUR-COMPONENT DECOMPOSITION FOR POLARIMETRIC SAR

2016 ◽  
Vol III-7 ◽  
pp. 207-211
Author(s):  
J. X. Zhang ◽  
G. M. Huang ◽  
J. J. Wei ◽  
Z. Zhao
Keyword(s):  
Diffuse Scattering ◽  
Orientation Angle ◽  
Decomposition Methods ◽  
New Method ◽  
Guizhou Province ◽  
Eigenvalue Decomposition ◽  
Similarity Parameter ◽  
Volume Scattering ◽  
Decomposition Scheme ◽  
Component Decomposition

There are more unknowns than equations to solve for previous four-component decomposition methods. In this case, the nonnegative power of each scattering mechanism has to be determined with some assumptions and physical power constraints. This paper presents a new decomposition scheme, which models the measured matrix after polarimetric orientation angle (POA) compensation as a linear sum of five scattering mechanisms (i.e., odd-bounce scattering, double-bounce scattering, diffuse scattering, volume scattering, and helix scattering). And the volume scattering power is calculated by a slight modified NNED method, owing to this method considering the external volume scattering model from oblique dihedral structure. After the helix and volume scattering powers have been determined sequentially, the other three scattering powers are estimated by combining the generalized similarity parameter (GSP) and the eigenvalue decomposition. Among them, due to POA compensation, the diffuse scattering induced from a dihedral with a relative orientation of 45º has negligible scattering power. Thus, the new method can be reduced as four-component decomposition automatically. And then the ALOS-2 PolSAR data covering Guiyang City, Guizhou Province, China were used to evaluate the performance of the new method in comparison with some classical decomposition methods (i.e. Y4R, S4R and G4U).

scholarly journals ALTERNATIVE TO FOUR-COMPONENT DECOMPOSITION FOR POLARIMETRIC SAR

2016 ◽  
Vol III-7 ◽  
pp. 207-211 ◽  
Author(s):  
J. X. Zhang ◽  
G. M. Huang ◽  
J. J. Wei ◽  
Z. Zhao
Keyword(s):  
Diffuse Scattering ◽  
Orientation Angle ◽  
Decomposition Methods ◽  
New Method ◽  
Guizhou Province ◽  
Eigenvalue Decomposition ◽  
Similarity Parameter ◽  
Volume Scattering ◽  
Decomposition Scheme ◽  
Component Decomposition

There are more unknowns than equations to solve for previous four-component decomposition methods. In this case, the nonnegative power of each scattering mechanism has to be determined with some assumptions and physical power constraints. This paper presents a new decomposition scheme, which models the measured matrix after polarimetric orientation angle (POA) compensation as a linear sum of five scattering mechanisms (i.e., odd-bounce scattering, double-bounce scattering, diffuse scattering, volume scattering, and helix scattering). And the volume scattering power is calculated by a slight modified NNED method, owing to this method considering the external volume scattering model from oblique dihedral structure. After the helix and volume scattering powers have been determined sequentially, the other three scattering powers are estimated by combining the generalized similarity parameter (GSP) and the eigenvalue decomposition. Among them, due to POA compensation, the diffuse scattering induced from a dihedral with a relative orientation of 45º has negligible scattering power. Thus, the new method can be reduced as four-component decomposition automatically. And then the ALOS-2 PolSAR data covering Guiyang City, Guizhou Province, China were used to evaluate the performance of the new method in comparison with some classical decomposition methods (i.e. Y4R, S4R and G4U).

scholarly journals Development of Method Enhanced Laser Ablation Efficiency According to Fine Curvature of the Polymer through the Preliminary Preparation Process Using UV Picosecond Laser

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 959 ◽  
Author(s):  
Seung Sik Ham ◽  
Ho Lee
Keyword(s):  
Laser Processing ◽  
Pulsed Laser ◽  
Picosecond Laser ◽  
Processing Method ◽  
New Method ◽  
Shielding Effect ◽  
Ablation Efficiency ◽  
Preliminary Preparation ◽  
Ultrashort Pulsed Laser ◽  
New Processing

In processes using the ultrashort pulsed laser, the phenomenon that the ablation efficiency is reduced due to the increase of the shielding effect of the generated plume is increasingly caused by the use of the high power and high repetition rate. A new method is needed to prevent a decrease in ablation efficiency in processing using an ultrashort pulsed laser. In this study, the proposed a processing method that can improve the ablation efficiency by providing an efficient escape path of plume, and examine the feasibility of a new processing method. The new method we proposed is a method of laser processing after generating a fine curvature in the polymer as a preliminary preparation. The fine curvature of the polymer produced by the preliminary preparation induces an artificial chimney-like opening along the path of the incident beam during laser processing, thereby enabling the plume to be effectively removed. The experiment for examine the feasibility through a new method was conducted using a 10-picosecond laser of UV wavelength with two optical systems. As a new processing method, when processing with ultrashort pulse laser, it was observed that the ablation efficiency improved.

scholarly journals The Beneficiation Processes of Low-Grade Sedimentary Phosphates of Tozeur-Nefta Deposit (Gafsa-Metlaoui Basin: South of Tunisia)

Minerals ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 2 ◽  
Author(s):  
Haïfa Boujlel ◽  
Ghassen Daldoul ◽  
Haïfa Tlil ◽  
Radhia Souissi ◽  
Noureddine Chebbi ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Microscopic Observation ◽  
Recovery Rate ◽  
Coarse Fraction ◽  
Low Grade ◽  
Reverse Flotation ◽  
Chemical Analyses ◽  
Phosphate Ore ◽  
Carbonate Fluorapatite

The enrichment of the low-grade-phosphate ore of the Tozeur-Nefta deposit was investigated using scrubbing-attrition, ball grinding and anionic/cationic reverse flotation in order to separate phosphate-rich particles from their gangue. The choice of the beneficiation process was based on the petrographic, mineralogical and chemical analyses. The petrographic and mineralogical studies have revealed the abundance of phosphatic (carbonate-fluorapatite-CFA) particles) coupled with carbonates (calcite, dolomite,) and silicates (quartz, illite, kaolonite) that constitute the (endo/exo) gangue of these ores. Chemical analysis has demonstrated that the raw phosphate sample contains low amounts of P2O5 (12.0%) and MgO (4.9%) and high amounts of CaO (40.7%) and SiO2 (20.5%). Microscopic observation/counting has shown that the release mesh occurs in the 71–315 μm size. Scrubbing-attrition, grinding and reverse flotation methods were applied to the +71μm fraction. Scrubbing-attrition tests of the 71–315 μm fraction have helped to improve the P2O5 grade to 15.5%. Ball-grinding tests were used to reduce the coarse fraction +315 μm. Grounded materials were sieved to 71–315 μm and combined with the scrubbed fraction in the flotation feed. Reverse-flotation tests of the phosphate-rich fraction (71–315 μm) have helped to improve the P2O5 grade to 27.1%, with a recovery rate of 92.4%.

Investigation on Beneficiation Strategy for Collophane

2013 ◽  
Vol 634-638 ◽  
pp. 3404-3407 ◽  
Author(s):  
Qin Bo Cao ◽  
Shu Ming Weng ◽  
Chen Xiu Li ◽  
Shao Jun Bai ◽  
Dan Liu
Keyword(s):  
Plant Growth ◽  
Phosphoric Acid ◽  
Guizhou Province ◽  
Low Grade ◽  
Flow Sheet ◽  
Reverse Flotation ◽  
Agricultural Plant ◽  
Wet Process ◽  
Major Nutrients

Phosphate being one of the three major nutrients required for agricultural plant growth usually presents as collophane in China. Since fine phosphate and other gauge minerals associate with each other and form intergrowth, the beneficiation of collophane is extremely difficult. In this paper, the flotation strategy for a low grade collophane ore from Guizhou province in China was studied in detail. Direct, reverse and direct-reverse combined flotation sheets were employed to collophane flotation. The results reveal that direct-reverse flotation is a suitable flotation flow sheet for this collophane ore. With direct-reverse flotation sheet, the grade of P2O5 in concentrate is 33%, which is improved by 3% comparing direct flotation and P2O5 recovery could achieve 80%. In addition, content of MgO decreased to 0.9%, which satisfied the requirement of wet-process phosphoric acid.

A New Method for Processing Ceramics with Cracked Glaze

2011 ◽  
Vol 418-420 ◽  
pp. 63-66
Author(s):  
Ji Wei Fan ◽  
Xiao Peng Li ◽  
Zhao Jun Zhang ◽  
Wang Xi Zhang ◽  
Zhi Qiang Jiao ◽  
...  
Keyword(s):  
Laser Processing ◽  
Ceramic Materials ◽  
Processing Parameters ◽  
Processing Method ◽  
New Method ◽  
Ceramic Surface ◽  
Laser Technique

Laser processing ceramic materials is a new application of laser technique. This paper presents the study of making cracked glaze surface by laser processing. Proposed the applicable the composition of glaze, the main processing parameters of laser processing, and discussed the factors which may affect the quality of cracked glazing surface. It indicates that laser processing could be a new and easy processing method to produce the cracked glazing on the ceramic surface.

Sign in / Sign up

Export Citation Format

Share Document