CN108097453B - The method of magnetic iron ore is removed from iron concentrate containing high sulphur - Google Patents

The method of magnetic iron ore is removed from iron concentrate containing high sulphur Download PDF

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CN108097453B
CN108097453B CN201810147521.8A CN201810147521A CN108097453B CN 108097453 B CN108097453 B CN 108097453B CN 201810147521 A CN201810147521 A CN 201810147521A CN 108097453 B CN108097453 B CN 108097453B
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iron ore
magnetic iron
ore
concentrate
raw material
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CN108097453A (en
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云伟
云文杰
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Inner Mongolia Fubao High-tech Development Co., Ltd.
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03BSEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B7/00Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00Flotation
    • B03D1/001Flotation agents
    • B03D1/002Inorganic compounds
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/007Modifying reagents for adjusting pH or conductivity
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00Specified effects produced by the flotation agents
    • B03D2201/02Collectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03DFLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00Specified materials treated by the flotation agents; Specified applications
    • B03D2203/02Ores

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The method that the present invention relates to a kind of to remove magnetic iron ore from iron concentrate containing high sulphur, belongs to mineral engineering field.The higher quality to iron ore concentrate of the sulfur content of iron concentrate containing high sulphur, which causes, to be seriously affected.Magnetic iron ore is oxidizable, easy argillization, and degree of oxidation is deep mixed, cause to be difficult to be down to the sulphur in iron ore concentrate 0.3% hereinafter, and iron ore concentrate rate of recovery loss it is larger.The present invention, can be by most of magnetic iron ore monomer dissociation and overground generation argillization by using ore grinding appropriate.Use the mixture of efficient, easy aluminum sulfate or aluminum sulfate and sodium phosphate, ammonium fluosilicate for the pH regulator and activator of magnetic iron ore, and the selective and preferable collecting agent of collecting performance, magnetic iron ore mineral surfaces are activated well, and the state-of-charge of the mineral surfaces in ore pulp is controlled well, efficiently separating for magnetic iron ore and magnetic iron ore is realized, the fine quality iron concentrate and magnetic iron ore rough concentrate of high-grade and high-recovery are obtained.

Description

The method of magnetic iron ore is removed from iron concentrate containing high sulphur
Technical field
The invention belongs to mineral engineering fields, and in particular to a kind of side that magnetic iron ore is removed from iron concentrate containing high sulphur Method.
Background technique
Iron concentrate containing high sulphur sulfur content is higher, generally 2% or more, causes and seriously affects to the quality of iron ore concentrate.Iron essence Containing sulfur minerals present in mine not only pollute atmosphere during the sintering process, but also in order to guarantee that desulfurization effect must be added to more Lime increases, coke ratio raising so as to cause the quantity of slag, and in addition the sulphur in steel can be also easy to produce " hot-short " in steel hot-working.Only There is the sulfur content for reducing iron ore concentrate, influence of the sulphur to subsequent job could be eliminated, the grade of iron ore concentrate could be improved.In iron ore concentrate Containing sulfur minerals be generally magnetic iron ore, magnetic iron ore is easier to aoxidize than other sulfide minerals, under oxygen and water effect, Magnetic iron ore quickly aoxidizes, and oxidation rate is 20 times~100 times of pyrite.Additionally, due to magnetic iron ore crystal structure difference Caused composition and electronic structure difference will affect magnetic iron ore oxidation to degree, the presence of microelement and content is how many, ring Border temperature all can oxidation to magnetic iron ore and oxidation rate have an impact.Therefore, magnetic iron ore is in floatation process, due to it Oxidizable, argillization, and degree of oxidation is deep mixed, belongs to the mineral of more difficult removing.Magnetic iron ore is removed in iron ore concentrate Method is generally floatation, relatively more to the Oxidized copper ores of removing magnetic iron ore progress at present, mainly to flotation activating, suppression The research of preparation and collecting agent.The activator of research includes sulfuric acid, copper sulphate, hydrochloric acid, oxalic acid, ammonium nitrate, ammonium sulfate, fluosilicic acid Sodium, vulcanized sodium etc.;Inhibitor includes lime, sulfurous acid, sodium humate, sodium sulphate, dimethyldithiocarbamate, cyaniding Object etc.;Collecting agent includes ethyl xanthogenate, butyl xanthate, diethyldithiocarbamate, isoamyl xanthate, butyl ammonium aerofloat, sulfydryl sodium benzothiazole etc..These are floating The magnetic iron ore separating effect for selecting medicament deeper to iron concentrate containing high sulphur, especially degree of oxidation is bad, and being difficult will be in iron ore concentrate Sulphur be down to 0.3% hereinafter, and iron ore concentrate the rate of recovery loss it is more, below 88%.
Summary of the invention
The method that the object of the present invention is to provide a kind of from iron concentrate containing high sulphur removes magnetic iron ore, this method is by iron ore concentrate In sulphur be down to 0.3% hereinafter, and the rate of recovery of iron ore concentrate reach 90% or more, reduce pollution of the sulphur to atmosphere.
The purpose of the present invention is realized as follows.
1, the processing of raw material;
Iron concentrate containing high sulphur is subjected to ore grinding, -200 mesh is milled to and accounts for 70-85%, then ore milling product is concentrated, is concentrated It is 35-45% to pulp density;
2, the activation of magnetic iron ore;
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using aluminum sulfate or mass ratio 1-2:3-1: The mixture or matter of 2-1 sodium phosphate, the mixture of ammonium fluosilicate and aluminum sulfate or mass ratio 3-1:1-2 aluminum sulfate and ammonium fluosilicate Measure the pH regulator and activator than the mixture of 1-2:3-2 aluminum sulfate and sodium phosphate as magnetic iron ore, pH regulator and work Agent dosage is 1.5-4.5kg/t iron concentrate containing high sulphur, and 3-8min is stirred under natural temperature, adjusts pH value 4.5-5.5;
3, magnetic iron ore roughing;
Mass ratio 3-2:2-1:1- is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of 0.5 amylic sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.2- 1-5min is stirred under the conditions of 0.8kg/t iron concentrate containing high sulphur, natural temperature, is carried out roughing and is sorted magnetic iron ore, obtains sulfur grade 17- 25%, sand setting (iron ore concentrate) of the magnetic iron ore rougher concentration and sulfur grade of rate of recovery 80-86% less than 0.55%, sand setting conduct Scan the raw material of recycling magnetic iron ore;
4, magnetic iron ore is scanned;
The sand setting that above-mentioned steps obtain is scanned into raw material as flotation, with mass ratio 3-2:2-1:1-0.5 amyl xanthic acid The collecting agent of sodium, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.05-0.15kg/t high-sulfur iron essence Mine stirs 1-3min under the conditions of natural temperature, is then scanned under natural ph, and sulfur grade 8-15%, recycling are obtained Scavenger concentrate and sulfur grade 0.1-0.3%, the full Iron grade of rate 6-11% are greater than the iron ore concentrate of 67%, rate of recovery 90-95%;
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
Compared with prior art, the technology of the present invention effect includes:
This technology uses ore grinding appropriate first, by most of magnetic iron ore monomer dissociation, and cannot overground generation argillization, On the one hand ore grinding cost is saved, while obtains the Suitable base of removing magnetic iron ore;Using efficient activator and pH tune It whole dose, is well activated magnetic iron ore mineral surfaces, and controls the charged shape of the mineral surfaces in ore pulp well State;Using have preferably selectivity and collecting performance combined capturing and collecting agent, can the magnetic iron ore different to degree of oxidation catch simultaneously It receives, obtains the fine quality iron concentrate and magnetic iron ore rough concentrate of high-grade and high-recovery, realize magnetic iron ore and magnetic iron ore Efficiently separate, solve the separation problem of iron concentrate containing high sulphur and magnetic iron ore.
The present invention, i.e., will using efficient pharmaceutical agent combinations using a kind of method for removing magnetic iron ore from iron concentrate containing high sulphur Magnetic iron ore is removed from iron ore concentrate, and the sulphur in iron ore concentrate is made to be down to 0.3% hereinafter, and guaranteeing that the rate of recovery of iron ore concentrate exists 90% or more, the sulfur content of iron ore concentrate is not only reduced, influence of the sulphur to subsequent job is eliminated, reduces dirt of the sulphur to atmosphere Dye, and the loss of iron ore concentrate is reduced, iron ore concentrate is become into fine quality iron concentrate.
Detailed description of the invention
Fig. 1 is the process flow chart for removing the method for magnetic iron ore in the present invention from iron concentrate containing high sulphur.
Specific embodiment
It is described below and specific embodiments of the present invention is fully shown, to enable those skilled in the art to practice it ?.
Embodiment 1
A method of it removing magnetic iron ore from iron concentrate containing high sulphur, mainly includes following components:
1, the processing of raw material;
Full Iron grade 67.30%, the iron concentrate containing high sulphur containing sulfur grade 2.02% are subjected to ore grinding, -200 mesh is milled to and accounts for 82.1%, then ore milling product is concentrated, being concentrated into ore pulp mass concentration is 40%.
2, the activation of magnetic iron ore;
PH using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using aluminum sulfate as magnetic iron ore Regulator and activator, pH regulator and activator level are 2.2kg/t, and 5min is stirred under natural temperature, and adjustment pH value is 5。
3, magnetic iron ore roughing;
Mass ratio 2.5:1.5:0.6 is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of amylic sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.4kg/t, It stirs 2min under the conditions of natural temperature, carries out roughing and sort magnetic iron ore, obtain sulfur grade 22.35%, the rate of recovery 85.43% The sand setting (iron ore concentrate) of magnetic iron ore rougher concentration and sulfur grade 0.32%, the raw material that sand setting is scanned as magnetic iron ore.
4, magnetic iron ore is scanned;
Using above-mentioned steps obtain sand setting scan raw material as flotation, with mass ratio 2.5:1.5:0.6 amylic sodium xanthogenate, The collecting agent of sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.08kg/t, in natural temperature condition Lower stirring 2min, is then scanned under natural ph, obtain sulfur grade 9.28%, the rate of recovery 6.46% scavenger concentrate and Sulfur grade 0.18%, full Iron grade 68.40%, the rate of recovery 92.27% iron ore concentrate.
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
Embodiment 2
A method of it removing magnetic iron ore from iron concentrate containing high sulphur, mainly includes following components:
1, the processing of raw material;
Full Iron grade 67.40%, the iron concentrate containing high sulphur containing sulfur grade 3.01% are subjected to ore grinding, -200 mesh is milled to and accounts for 75.5%, then ore milling product is concentrated, being concentrated into pulp density is 38.5%.
2, the activation of magnetic iron ore;
PH using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using aluminum sulfate as magnetic iron ore Regulator and activator, pH regulator and activator level are 4kg/t, and 6min is stirred under natural temperature, and adjustment pH value is 4.6。
3, magnetic iron ore roughing;
Mass ratio 3:1:0.8 amyl is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.60kg/t, nature 5min is stirred under the conditions of temperature, roughing is carried out and sorts magnetic iron ore, and it is yellow to obtain sulfur grade 24.18%, the magnetic of the rate of recovery 83.12% The sand setting (iron ore concentrate) of iron ore rougher concentration and sulfur grade 0.52%, the raw material that sand setting is scanned as magnetic iron ore.
4, magnetic iron ore is scanned;
The sand setting that above-mentioned steps obtain is scanned into raw material as flotation, with mass ratio 3:1:0.8 amylic sodium xanthogenate, ethyl The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.16kg/t are stirred under the conditions of natural temperature 5min is mixed, is then scanned under natural ph, the scavenger concentrate and sulphur of sulfur grade 14.55%, the rate of recovery 7.61% are obtained Grade 0.29%, full Iron grade 68.60%, the rate of recovery 90.30% iron ore concentrate.
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
Embodiment 3
A method of it removing magnetic iron ore from iron concentrate containing high sulphur, mainly includes following components:
1, the processing of raw material;
Full Iron grade 66.70%, the iron concentrate containing high sulphur containing sulfur grade 1.41% are subjected to ore grinding, -200 mesh is milled to and accounts for 76.5%, then ore milling product is concentrated, being concentrated into pulp density is 41.1%.
2, the activation of magnetic iron ore;
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using mass ratio 1:1 sodium phosphate and sulfuric acid PH regulator and activator of the mixture of aluminium as magnetic iron ore, pH regulator and activator level are 2.0kg/t, in nature At a temperature of stir 5min, adjustment pH value is 5.1.
3, magnetic iron ore roughing;
Mass ratio 2:2:0.5 amyl is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.30kg/t, nature 5min is stirred under the conditions of temperature, roughing is carried out and sorts magnetic iron ore, and it is yellow to obtain sulfur grade 20.93%, the magnetic of the rate of recovery 82.79% The sand setting (iron ore concentrate) of iron ore rougher concentration and sulfur grade 0.26%, the raw material that sand setting is scanned as magnetic iron ore.
4, magnetic iron ore is scanned;
The sand setting that above-mentioned steps obtain is scanned into raw material as flotation, with mass ratio 2:2:0.5 amylic sodium xanthogenate, ethyl The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.08kg/t are stirred under the conditions of natural temperature 2min is mixed, is then scanned under natural ph, the scavenger concentrate and sulphur product of sulfur grade 8.67%, the rate of recovery 7.95% are obtained Position 0.14%, full Iron grade 67.50%, the rate of recovery 94.12% iron ore concentrate.
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
Embodiment 4
A method of it removing magnetic iron ore from iron concentrate containing high sulphur, mainly includes following components:
1, the processing of raw material;
Full Iron grade 66.50%, the iron concentrate containing high sulphur containing sulfur grade 2.51% are subjected to ore grinding, -200 mesh is milled to and accounts for 78.6%, then ore milling product is concentrated, being concentrated into pulp density is 38.8%.
2, the activation of magnetic iron ore;
Using above-mentioned steps obtain ore pulp be used as flotation magnetic iron ore raw material, using mass ratio 2:1.5 ammonium fluosilicate with PH regulator and activator of the mixture of aluminum sulfate as magnetic iron ore, pH regulator and activator level are 2.8kg/t, 5min is stirred under natural temperature, adjustment pH value is 4.9.
3, magnetic iron ore roughing;
Mass ratio 3:2:0.8 amyl is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.45kg/t, nature 6min is stirred under the conditions of temperature, roughing is carried out and sorts magnetic iron ore, and it is yellow to obtain sulfur grade 24.51%, the magnetic of the rate of recovery 81.43% The sand setting (iron ore concentrate) of iron ore rougher concentration and sulfur grade 0.50%, the raw material that sand setting is scanned as magnetic iron ore.
4, magnetic iron ore is scanned;
The sand setting that above-mentioned steps obtain is scanned into raw material as flotation, with mass ratio 3:2:0.8 amylic sodium xanthogenate, ethyl The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.12kg/t are stirred under the conditions of natural temperature 3min is mixed, is then scanned under natural ph, the scavenger concentrate and sulphur of sulfur grade 13.16%, the rate of recovery 10.33% are obtained Grade 0.23%, full Iron grade 67.60%, the rate of recovery 91.11% iron ore concentrate.
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
Embodiment 5
A method of it removing magnetic iron ore from iron concentrate containing high sulphur, mainly includes following components:
1, the processing of raw material;
Full Iron grade 67.40%, the iron concentrate containing high sulphur containing sulfur grade 3.01% are subjected to ore grinding, -200 mesh is milled to and accounts for 75.5%, then ore milling product is concentrated, being concentrated into pulp density is 38.5%.
2, the activation of magnetic iron ore;
Using the ore pulp that above-mentioned steps obtain as the raw material of flotation magnetic iron ore, using mass ratio 1:3:2 sodium phosphate, fluorine silicon PH regulator and activator of the mixture of sour ammonium and aluminum sulfate as magnetic iron ore, pH regulator and activator level are 3.4kg/t, stirs 6min under natural temperature, and adjustment pH value is 4.7.
3, magnetic iron ore roughing;
Mass ratio 3:1:0.8 amyl is added as roughing flotation raw material in the raw material that above-mentioned steps are obtained in the raw material The collecting agent of sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, in collector dosage 0.60kg/t, nature 5min is stirred under the conditions of temperature, roughing is carried out and sorts magnetic iron ore, and it is yellow to obtain sulfur grade 24.98%, the magnetic of the rate of recovery 83.80% The sand setting (iron ore concentrate) of iron ore rougher concentration and sulfur grade 0.54%, the raw material that sand setting is scanned as magnetic iron ore.
4, magnetic iron ore is scanned;
The sand setting that above-mentioned steps obtain is scanned into raw material as flotation, with mass ratio 3:1:0.8 amylic sodium xanthogenate, ethyl The collecting agent of sodium xanthogenate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.14kg/t are stirred under the conditions of natural temperature 5min is mixed, is then scanned under natural ph, the scavenger concentrate and sulphur of sulfur grade 14.85%, the rate of recovery 7.31% are obtained Grade 0.30%, full Iron grade 68.60%, the rate of recovery 90.10% iron ore concentrate.
5, it is incorporated as rougher concentration and scavenger concentrate that above-mentioned steps obtain further to select the raw material of sulphur.
It should be understood that the invention is not limited to the process and structure that are described above and are shown in the accompanying drawings, And various modifications and changes may be made without departing from the scope thereof.The scope of the present invention is only limited by the attached claims System.

Claims (1)

1. a kind of method for removing magnetic iron ore from iron concentrate containing high sulphur, which is characterized in that including following components:
(1) processing of raw material: carrying out ore grinding for iron concentrate containing high sulphur, is milled to -200 mesh and accounts for 76.5%, then carries out ore milling product Concentration, being concentrated into pulp density is 41.1%;
(2) activation of magnetic iron ore: using the ore pulp that step (1) obtains as the raw material of flotation magnetic iron ore, using mass ratio 1:1 PH regulator and activator of the mixture of sodium phosphate and aluminum sulfate as magnetic iron ore, pH regulator and activator level are 2.0kg/t stirs 5min under natural temperature, and adjustment pH value is 5.1, obtains mixture;
(3) magnetic iron ore roughing: quality is added in the raw material as roughing flotation raw material in the mixture that step (2) are obtained Collecting agent than 2:2:0.5 amylic sodium xanthogenate, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.30kg/t stirs 5min under the conditions of natural temperature, obtains sand setting;
(4) magnetic iron ore is scanned: the sand setting that step (3) obtain is scanned into raw material as flotation, it is yellow with mass ratio 2:2:0.5 amyl The collecting agent of ortho acid sodium, sodium ethylxanthate and fourth Sodium Aerofloat as magnetic iron ore, collector dosage 0.08kg/t, in natural epidemic disaster in booth 2min is stirred under the conditions of degree, is then scanned under natural ph.
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CN109261368A (en) * 2018-08-13 2019-01-25 昆明理工大学 A kind of inhibitor and application method for magnetic iron ore
CN109604070B (en) * 2018-12-05 2020-11-06 遵义市博莱金矿业有限责任公司 Agent for high-sulfur magnetite ore beneficiation and application method thereof
CN109701736B (en) * 2019-02-27 2021-07-06 铜陵化工集团新桥矿业有限公司 Complex ore dressing process containing magnetite and pyrrhotite
CN110560269B (en) * 2019-09-06 2021-07-02 中钢集团马鞍山矿山研究总院股份有限公司 Beneficiation method for gradient recycling of high-sulfur magnetite concentrate
CN110898987B (en) * 2019-11-13 2021-06-22 鞍钢集团矿业有限公司 Oxidation desulfurization method of high-sulfur magnetite concentrate
CN111495601A (en) * 2020-04-20 2020-08-07 武汉理工大学 Combined collecting agent and method for removing pyrite and pyrrhotite from high-sulfur iron concentrate
CN114609000B (en) * 2022-05-11 2022-08-02 矿冶科技集团有限公司 Judgment method for reducing magnetic effectiveness of pyrrhotite and application

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