CN108212503B - Purification and selection method of barite - Google Patents
Purification and selection method of barite Download PDFInfo
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- CN108212503B CN108212503B CN201810137839.8A CN201810137839A CN108212503B CN 108212503 B CN108212503 B CN 108212503B CN 201810137839 A CN201810137839 A CN 201810137839A CN 108212503 B CN108212503 B CN 108212503B
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- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 title claims abstract description 126
- 239000010428 baryte Substances 0.000 title claims abstract description 112
- 229910052601 baryte Inorganic materials 0.000 title claims abstract description 112
- 238000000746 purification Methods 0.000 title claims abstract description 14
- 238000010187 selection method Methods 0.000 title description 3
- 239000012141 concentrate Substances 0.000 claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 26
- 235000019353 potassium silicate Nutrition 0.000 claims abstract description 24
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006260 foam Substances 0.000 claims abstract description 22
- 238000005188 flotation Methods 0.000 claims abstract description 20
- 230000002087 whitening effect Effects 0.000 claims abstract description 11
- 239000002270 dispersing agent Substances 0.000 claims abstract description 9
- 239000004088 foaming agent Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 7
- WUOACPNHFRMFPN-UHFFFAOYSA-N alpha-terpineol Chemical compound CC1=CCC(C(C)(C)O)CC1 WUOACPNHFRMFPN-UHFFFAOYSA-N 0.000 claims abstract description 5
- SQIFACVGCPWBQZ-UHFFFAOYSA-N delta-terpineol Natural products CC(C)(O)C1CCC(=C)CC1 SQIFACVGCPWBQZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229940116411 terpineol Drugs 0.000 claims abstract description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 28
- 238000007885 magnetic separation Methods 0.000 claims description 22
- 238000001354 calcination Methods 0.000 claims description 20
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 238000000227 grinding Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- LNETULKMXZVUST-UHFFFAOYSA-N 1-naphthoic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1 LNETULKMXZVUST-UHFFFAOYSA-N 0.000 claims description 8
- BCKXLBQYZLBQEK-KVVVOXFISA-M Sodium oleate Chemical compound [Na+].CCCCCCCC\C=C/CCCCCCCC([O-])=O BCKXLBQYZLBQEK-KVVVOXFISA-M 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- RZFBEFUNINJXRQ-UHFFFAOYSA-M sodium ethyl xanthate Chemical compound [Na+].CCOC([S-])=S RZFBEFUNINJXRQ-UHFFFAOYSA-M 0.000 claims description 8
- GGHPAKFFUZUEKL-UHFFFAOYSA-M sodium;hexadecyl sulfate Chemical compound [Na+].CCCCCCCCCCCCCCCCOS([O-])(=O)=O GGHPAKFFUZUEKL-UHFFFAOYSA-M 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000006148 magnetic separator Substances 0.000 claims description 7
- 238000005554 pickling Methods 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 2
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims 1
- 235000011613 Pinus brutia Nutrition 0.000 claims 1
- 241000018646 Pinus brutia Species 0.000 claims 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims 1
- 239000012535 impurity Substances 0.000 abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 3
- GYRLIFXJBOSGLA-UHFFFAOYSA-N dodecoxymethanedithioic acid Chemical compound CCCCCCCCCCCCOC(S)=S GYRLIFXJBOSGLA-UHFFFAOYSA-N 0.000 abstract 1
- 239000010665 pine oil Substances 0.000 description 11
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 6
- -1 dodecyl yellow acid Chemical compound 0.000 description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- QVQLCTNNEUAWMS-UHFFFAOYSA-N barium oxide Chemical compound [Ba]=O QVQLCTNNEUAWMS-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 229910052755 nonmetal Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000003209 petroleum derivative Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/012—Organic compounds containing sulfur
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION 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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Abstract
The invention belongs to the technical field of mineral separation, and discloses a method for purifying and selecting barite, which comprises the following steps: (1) pretreating ores; (2) flotation and purification: under the condition of a stirring speed of 1400-1600 rpm, according to the total mass of raw ore pulp, firstly adding 1500-2500 g/t of an adjusting agent, adjusting the pH value of the ore pulp to 8.5-9.5, adding a collecting agent and a foaming agent of terpineol oil in rough concentration, adding a dispersing agent of water glass in first-stage concentration, taking the raw ore pulp as a standard, wherein the adding amount of the dodecyl-xanthic acid is 40-70 g/t, the adding amount of the terpineol oil is 30-35 g/t, and the adding amount of the water glass is 960-990 g/t, and collecting final concentrated foam products to obtain barite concentrate; (2) and (5) whitening treatment. The method can comprehensively and effectively remove various impurities in the barite raw ore and effectively whiten the barite raw ore, and has the advantages of simplicity, controllability and low operation cost.
Description
Technical Field
The invention belongs to the technical field of mineral separation, and particularly relates to a method for purifying and selecting barite.
Background
The barite is a non-metal mineral product with barium sulfate as a main component, the pure barite is white and glossy, is also gray, light red, light yellow and the like due to the influence of impurities and impurities, is a barium-containing mineral with the widest natural distribution, has the characteristics of high density and stable chemical property, is mainly used as a weighting agent for petroleum and natural gas drilling mud, and has important application in pigments, chemical raw materials and road construction. Compared with iron ore resources, the barite resources in China are large in reserves and rich in ores, but most of the barite resources are concentrated in southern areas such as Guizhou, Guangxi, Hunan and the like, and at present, the development of domestic petroleum and natural gas is mainly in the northwest and the transportation distance is long; in China, the reserves and the yields of barite resources are the top of the world, but most of the existing barite has low grade, closely accompanies with other metal ores and non-metal ore species, and can be used after being purified and selected. Because the quality of the barite ore is better in China, the domestic supply can meet the demand, but with the increasing exhaustion of high-quality single barite ore, the investment in the aspect of purification and selection of the existing barite is less, so that the technical progress is slow, and a large amount of symbiotic associated barite resources cannot be utilized. The existing barite purification method has an unsatisfactory impurity removal effect, the content of barium sulfate in the barite is about 91% generally, the whiteness of the barite is 92% generally, and the barite selection has the defects of low production efficiency, high labor intensity, resource waste, low whiteness of the barite and the like.
In conclusion, it is a very urgent need to research a barite purification and selection method with simple and controllable process flow, low operation cost and easy operation.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method for purifying and selecting barite, which is used for solving the problems that various impurities in barite raw ore cannot be comprehensively and effectively removed and effective whitening cannot be carried out by the conventional method for purifying and selecting barite.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into crushing equipment for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 200-300 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, and adding water to prepare raw ore pulp with the concentration of 25-35%;
(2) flotation and purification: adopting a first-stage roughing five-stage concentration flow, directly feeding the roughed foam products into a first-stage concentration for separation, sequentially feeding the roughed foam products into a next-stage concentration, putting raw ore pulp into flotation equipment, adding a collecting agent and a foaming agent terpineol oil into the roughed pulp according to the total mass of the raw ore pulp, adding a dispersing agent water glass into the first-stage concentration, wherein the baume degree of the water glass is 40-50 degrees, the raw ore pulp is taken as a standard, the addition amount of dodecyl yellow acid is 40-70 g/t, the addition amount of the terpineol oil is 30-35 g/t, and the addition amount of the water glass is 960-990 g/t, and collecting final concentrated foam products to obtain barite concentrate;
(3) whitening treatment: according to the total mass of the barite concentrate, carrying out acid pickling on the barite concentrate with sulfuric acid until the pH value is 5.5-6.5, and then putting the barite concentrate into calcining equipment for calcining to obtain a finished product.
Further, the collecting agent is prepared by mixing the following raw materials in parts by weight: 50-60 parts of sodium hexadecyl sulfate, 40-50 parts of sodium oleate, 25-35 parts of naphthoic acid and 10-20 parts of sodium ethyl xanthate.
Further, the regulator is sodium carbonate or sodium hydroxide.
Further, in the step (1), the magnetic field intensity during magnetic separation is 6000-8000 oersted, and 2-4 sections of magnetic separation are carried out.
Further, in the step (1), the crushing equipment adopts a jaw crusher, a counterattack crusher, a hammer crusher, a cone crusher or a roller crusher.
Further, in the step (3), the calcining device is a high-temperature box-type resistance furnace, a rotary kiln, a rotary furnace or a tunnel kiln.
Further, in the step (3), the calcination time is 100-110 min, and the calcination temperature is 860-900 ℃.
Further, in the step (3), the sulfuric acid is industrial sulfuric acid, and the concentration of the industrial sulfuric acid is 60-67% by weight.
Compared with the prior art, the invention has the following beneficial effects:
1. the barite obtained by the processes of ore pretreatment, flotation purification, whitening treatment and the like has the advantages of uniform particle distribution, higher purity, low production cost, easy process control and the like. The method firstly crushes, classifies and reselects the barite raw material, carries out magnetic separation on the barite raw material before flotation, and recovers iron minerals in the barite raw material, thereby not only improving the content of barium oxide in the flotation raw material, but also reducing the ore amount of flotation and reducing the processing cost. During flotation, sodium carbonate or sodium hydroxide with proper weight is used as a regulator, the effect between a collecting agent and barite ore can be adjusted, the floatability of the barite is promoted, the aqueous solution of the sodium carbonate shows alkalescence, the pH stability of the raw ore pulp can be maintained, the collecting agent, a foaming agent pine oil and a dispersing agent water glass are added to enrich the target mineral barite, fluorite and the barite can be effectively separated, impurities such as impurity metal, metal oxide, organic matter, carbonate, silicic acid and the like in the barite raw ore can be completely removed, and the purity of the barite is greatly improved. During whitening treatment, the barite concentrate washed by sulfuric acid is exploded due to heat absorption at high temperature, so that coloring organic matters distributed in barite crystals or gaps are volatilized, and the whiteness can be effectively improved. The method for purifying and selecting the barite can comprehensively and effectively remove various impurities in the barite raw ore and effectively whiten the barite raw ore, and has the advantages of simplicity, controllability, low operation cost and easiness in operation.
2. The collecting agent is prepared by mixing sodium hexadecyl sulfate, sodium oleate, naphthoic acid and sodium ethyl xanthate according to a certain proportion, has certain bubble performance, can improve the collecting capability and the selection characteristic of the collecting agent, and has the advantages of low toxicity, high water solubility, strong collecting capability, good selectivity, small influence of temperature and the like.
Detailed Description
The present invention will be further illustrated by the following specific examples, which are provided for the purpose of more clearly describing the technical solutions and should not be construed as a limitation to the scope of the present invention.
Example 1
A method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into a jaw crusher for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 200 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, wherein the magnetic field intensity during magnetic separation is 6000 oersted, carrying out 2-stage magnetic separation, and adding water to prepare raw ore pulp with the concentration of 25%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine-selection flow, directly feeding the roughed foam products into a first-stage fine selection for sorting, sequentially feeding the roughed foam products into a next-stage fine selection, putting raw ore pulp into flotation equipment, firstly adding 1500g/t of regulator sodium carbonate according to the total mass of the raw ore pulp under the condition of stirring speed of 1400rpm, regulating the pH value of the ore pulp to be 8.5, adding a collecting agent and foaming agent pine oil into the rougher selection, adding dispersant water glass into the first-stage fine selection, wherein the baume degree of the water glass is 40 ℃, the adding amount of dodecyl yellow acid is 40g/t by taking the raw ore pulp as a standard, the adding amount of the pine oil is 30g/t, the adding amount of the water glass is 960g/t, and collecting final fine-selected foam products to obtain barite concentrate; the collecting agent is prepared by mixing the following raw materials in parts by weight: 50 parts of sodium hexadecyl sulfate, 40 parts of sodium oleate, 25 parts of naphthoic acid and 10 parts of sodium ethyl xanthate.
(3) Whitening treatment: according to the total mass of the barite concentrate, pickling the barite concentrate with industrial sulfuric acid with the concentration of 60 wt% until the pH value is 5.5, and then putting the barite concentrate into a high-temperature box-type resistance furnace for calcining for 100min at the calcining temperature of 860 ℃, thus obtaining a finished product.
The barium sulfate content of the finished barite product prepared by the embodiment of the invention is 98.6%, and the whiteness of the finished barite product is 95%.
Example 2
A method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into a back-impact crusher for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 300 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, wherein the magnetic field intensity during magnetic separation is 8000 oersted, carrying out 4-stage magnetic separation, and adding water to prepare raw ore pulp with the concentration of 35%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine-selection flow, directly feeding the roughed foam products into a first-stage fine selection for sorting, sequentially feeding the roughed foam products into a next-stage fine selection, putting raw ore pulp into flotation equipment, firstly adding 2500g/t of sodium carbonate serving as an adjusting agent according to the total mass of the raw ore pulp under the condition of stirring speed of 1600rpm, adjusting the pH value of the ore pulp to be 9.5, adding a collecting agent and a foaming agent of pine oil into the rougher selection, adding water glass serving as a dispersing agent into the first-stage fine selection, wherein the baume degree of the water glass is 50 ℃, the adding amount of dodecyl yellow acid is 70g/t by taking the raw ore pulp as a standard, the adding amount of the pine oil is 35g/t, the adding amount of the water glass is 990g/t, and collecting final fine-selected foam products to obtain barite concentrate; the collecting agent is prepared by mixing the following raw materials in parts by weight: 60 parts of sodium hexadecyl sulfate, 50 parts of sodium oleate, 35 parts of naphthoic acid and 20 parts of sodium ethyl xanthate.
(3) Whitening treatment: according to the total mass of the barite concentrate, pickling the barite concentrate with 67 wt% industrial sulfuric acid until the pH value is 6.5, and then calcining in a rotary kiln for 110min at 900 ℃, thus obtaining the finished product.
The barium sulfate content of the finished barite product prepared by the embodiment of the invention is 98.5%, and the whiteness of the finished barite product is 96%.
Example 3
A method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into a hammer crusher for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 220 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, wherein the magnetic field intensity during magnetic separation is 6500 oersted, carrying out 3-stage magnetic separation, and adding water to prepare raw ore pulp with the concentration of 27%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine-selection flow, directly feeding the roughed foam products into a first-stage fine selection for sorting, sequentially feeding the roughed foam products into a next-stage fine selection, putting raw ore pulp into flotation equipment, firstly adding 1600g/t of sodium carbonate serving as an adjusting agent according to the total mass of the raw ore pulp under the condition of stirring speed of 1450rpm, adjusting the pH value of the ore pulp to be 8.6, adding a collecting agent and a foaming agent of pine oil into the rougher selection, adding water glass serving as a dispersing agent into the first-stage fine selection, wherein the baume degree of the water glass is 42 ℃, the adding amount of dodecyl yellow acid is 50g/t by taking the raw ore pulp as a standard, the adding amount of the pine oil is 31g/t, the adding amount of the water glass is 970g/t, and collecting final fine-selected foam products to obtain barite concentrate; the collecting agent is prepared by mixing the following raw materials in parts by weight: 52 parts of sodium hexadecyl sulfate, 42 parts of sodium oleate, 27 parts of naphthoic acid and 12 parts of sodium ethyl xanthate.
(3) Whitening treatment: according to the total mass of the barite concentrate, pickling the barite concentrate with 62 wt% industrial sulfuric acid until the pH value is 5.8, and then putting the barite concentrate into a rotary furnace for calcination, wherein the calcination time is 102min, and the calcination temperature is 870 ℃, so that a finished product is obtained.
The barium sulfate content of the finished barite product prepared by the embodiment of the invention is 98.2%, and the whiteness of the finished barite product is 96%.
Example 4
A method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting raw barite ore into a cone crusher for crushing, screening and grading, grinding the graded raw barite ore by using a grinder until the fineness is 240 meshes, then putting the raw barite ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, wherein the magnetic field intensity during magnetic separation is 7000 oersted, performing 4-stage magnetic separation, and adding water to prepare raw ore pulp with the concentration of 30%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine-selection flow, directly feeding the roughed foam products into a first-stage fine selection for sorting, sequentially feeding the roughed foam products into a next-stage fine selection, putting raw ore pulp into flotation equipment, firstly adding 1900g/t of sodium carbonate serving as an adjusting agent according to the total mass of the raw ore pulp under the condition of a stirring speed of 1500rpm, adjusting the pH value of the ore pulp to 9.1, adding a collecting agent and a foaming agent of pine oil into the rougher selection, adding water glass serving as a dispersing agent into the first-stage fine selection, wherein the baume degree of the water glass is 45 ℃, the adding amount of dodecyl yellow acid is 60g/t by taking the raw ore pulp as a standard, the adding amount of the pine oil is 33g/t, the adding amount of the water glass is 980g/t, and collecting final fine-selected foam products to obtain barite concentrate; the collecting agent is prepared by mixing the following raw materials in parts by weight: 55 parts of sodium hexadecyl sulfate, 45 parts of sodium oleate, 30 parts of naphthoic acid and 15 parts of sodium ethyl xanthate.
(3) Whitening treatment: according to the total mass of the barite concentrate, pickling the barite concentrate with 65 wt% industrial sulfuric acid until the pH value is 6.1, and then putting the barite concentrate into a tunnel kiln for calcination, wherein the calcination time is 104min, and the calcination temperature is 870 ℃, so that a finished product is obtained.
The barium sulfate content of the finished barite product prepared by the embodiment of the invention is 98.3%, and the whiteness of the finished barite product is 95%.
Example 5
A method for purifying and selecting barite comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into a roller crusher for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 260 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, wherein the magnetic field intensity during magnetic separation is 7000 oersted, performing 4-stage magnetic separation, and adding water to prepare raw ore pulp with the concentration of 34%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine-selection flow, directly feeding the roughed foam products into a first-stage fine selection for sorting, sequentially feeding the roughed foam products into a next-stage fine selection, putting raw ore pulp into flotation equipment, firstly adding 2400g/t of sodium carbonate serving as an adjusting agent according to the total mass of the raw ore pulp under the condition of stirring speed of 1550rpm, adjusting the pH value of the ore pulp to be 9.2, adding a collecting agent and a foaming agent, namely pine oil, into the rougher selection, adding water glass serving as a dispersing agent into the first-stage fine selection, wherein the baume degree of the water glass is 48 ℃, the adding amount of dodecyl yellow acid is 65g/t by taking the raw ore pulp as a standard, the adding amount of the pine oil is 32g/t, the adding amount of the water glass is 985g/t, and collecting final fine-selected foam products to obtain barite concentrate; the collecting agent is prepared by mixing the following raw materials in parts by weight: 58 parts of sodium hexadecyl sulfate, 48 parts of sodium oleate, 32 parts of naphthoic acid and 18 parts of sodium ethyl xanthate.
(3) Whitening treatment: according to the total mass of the barite concentrate, pickling 66 wt% industrial sulfuric acid for the barite concentrate until the pH value is 6.2, and then putting the barite concentrate into a high-temperature box-type resistance furnace for calcining for 108min at 890 ℃, so as to obtain a finished product.
The barium sulfate content of the finished barite product prepared by the embodiment of the invention is 98.7%, and the whiteness of the finished barite product is 95%.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (7)
1. A method for purifying and selecting barite is characterized by comprising the following steps: the method comprises the following steps:
(1) ore pretreatment: firstly, putting barite raw ore into crushing equipment for crushing, screening and grading, grinding the graded barite raw ore by using a grinder until the fineness is 200-300 meshes, then putting the barite raw ore subjected to grinding treatment into a magnetic separator for wet type low intensity magnetic separation, and adding water to prepare raw ore pulp with the concentration of 25-35%;
(2) flotation and purification: adopting a first-stage roughing five-stage fine selection process, directly sending the coarsely selected foam products into a first-stage fine selection process for sorting, sequentially enabling the coarsely selected foam products in each stage to enter a next-stage fine selection process, putting raw ore pulp into flotation equipment, firstly adding 1500-2500 g/t of an adjusting agent according to the total mass of the raw ore pulp under the condition of stirring speed of 1400-1600 rpm, adjusting the pH value of the ore pulp to be 8.5-9.5, and adding a collecting agent and a foaming agent terpineol oil in the course of coarse selection, wherein the collecting agent is prepared by mixing the following raw materials in parts by weight: 50-60 parts of sodium hexadecyl sulfate, 40-50 parts of sodium oleate, 25-35 parts of naphthoic acid and 10-20 parts of sodium ethyl xanthate; adding dispersant water glass into the first-stage concentration, wherein the baume degree of the water glass is 40-50 degrees, the addition amount of the dodecyl benzene sulfonic acid is 40-70 g/t by taking the raw ore pulp as a standard, the addition amount of the pine alcohol oil is 30-35 g/t, and the addition amount of the water glass is 960-990 g/t, collecting final concentrated foam products, and obtaining barite concentrate;
(3) whitening treatment: according to the total mass of the barite concentrate, carrying out acid pickling on the barite concentrate with sulfuric acid until the pH value is 5.5-6.5, and then putting the barite concentrate into calcining equipment for calcining to obtain a finished product.
2. The method for purifying and selecting barite as claimed in claim 1, wherein: the regulator is sodium carbonate or sodium hydroxide.
3. The method for purifying and selecting barite as claimed in claim 1, wherein: in the step (1), the magnetic field intensity during magnetic separation is 6000-8000 oersted, and 2-4 sections of magnetic separation are carried out.
4. The method for purifying and selecting barite as claimed in claim 1, wherein: in the step (1), the crushing equipment adopts a jaw crusher, an impact crusher, a hammer crusher, a cone crusher or a roller crusher.
5. The method for purifying and selecting barite as claimed in claim 1, wherein: in the step (3), the calcining equipment is a high-temperature box-type resistance furnace, a rotary kiln, a rotary furnace or a tunnel kiln.
6. The method for purifying and selecting barite as claimed in claim 1, wherein: in the step (3), the calcination time is 100-110 min, and the calcination temperature is 860-900 ℃.
7. The method for purifying and selecting barite as claimed in claim 1, wherein: in the step (3), the sulfuric acid is industrial sulfuric acid, and the concentration of the industrial sulfuric acid is 60-67% by weight.
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| CN109127081A (en) * | 2018-08-15 | 2019-01-04 | 贵州紫云月华新材料有限公司 | A kind of barite production method |
| CN109201340A (en) * | 2018-11-23 | 2019-01-15 | 贵州大学 | A kind of method for floating of barite deposit |
| CN112619882A (en) * | 2020-11-10 | 2021-04-09 | 西北矿冶研究院 | Ore dressing method for siderite barite |
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| CN101585016A (en) * | 2009-06-22 | 2009-11-25 | 广西大学 | Low grade fluorite and barite flotation separation method |
| CN102616824A (en) * | 2012-04-09 | 2012-08-01 | 武汉理工大学 | Method for preparing ultrafine high-whiteness active barite powder |
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| FR2994535B1 (en) * | 2012-08-20 | 2014-08-08 | Ceca Sa | COLLECTORS FOR ENRICHMENT OF MINERALS |
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| CN101585016A (en) * | 2009-06-22 | 2009-11-25 | 广西大学 | Low grade fluorite and barite flotation separation method |
| CN102616824A (en) * | 2012-04-09 | 2012-08-01 | 武汉理工大学 | Method for preparing ultrafine high-whiteness active barite powder |
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| CN103639059A (en) * | 2013-12-11 | 2014-03-19 | 广西大学 | Beneficiation method for carbonic mud barite ore |
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