CN101972711B - Flotation process for charcoal clay-containing pyrite - Google Patents
Flotation process for charcoal clay-containing pyrite Download PDFInfo
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Abstract
The invention discloses a flotation process for charcoal clay-containing pyrite. The flotation process comprises the following steps of: taking a pyrite ore raw material, crushing and grinding the pyrite ore to dissociate mineral monomer, and then adding water into the ground ore to form ore pulp; after the ore pulp flows into a stirring tank, adding an adjusting agent, a collecting agent and a foaming agent into the ore pulp to condition the pulp respectively; and feeding the pulp conditioned material into a flotation system to perform flotation, wherein the flotation process comprises one-time rough flotation, at least three times of fine flotation and one-time fine middling re-cleaning. One or more of the adjusting agent, the collecting agent and the foaming agent is or are added in each operation as required; and the adjusting agent for flotation is lignin, the collecting agent is mixed xanthate of ethyl xanthate and butyl xanthate, and the foaming agent is No.2 oil. The process successfully realizes ore dressing enrichment of the charcoal clay-containing pyrite, and has the advantages of high separation efficiency, excellent process index, high quality of the obtained pyrite concentrate and the like.
Description
Technical field
The present invention is a kind of sulphide mineral flotation technique, particularly relate to a kind of be fit to contain charcoal shale and coal-series pyrite contain the pyritous floatation process of charcoal shale.
Background technology
Pyrite is the valuable source of the industrial sulphur of China, is the important source material of producing the Essential Chemistry products such as sulphur, sulfuric acid, sulphite.Pyrite according to the type of gangue mineral can be divided into take silicate gangue mineral as main yellow iron, take the carbonate gangue mineral as main yellow iron and coal-series pyrite stone.China's pyrite aboundresources, but rich ore is few, lean ore is many, and the overwhelming majority will could utilize by beneficiation enrichment.The pyrite beneficiation method of at present China's employing mainly is floatation, and minority adopts gravity separation method.Gravity separation method generally adopts spiral chute, jigging and shaking table to sort, and is fit to process the pyrite of coarse grain embedding cloth, and is very poor to the pyrite efficiency of separation of fine-grained disseminated grain.Floatation generally adopts xanthate collectors and 2# oil to sort, be suitable for sorting take silicate gangue mineral as main yellow iron and take the carbonate gangue mineral as main yellow iron, be particularly suitable for sorting fine-grained disseminated grain or disseminated pyrite, but only depend on interpolation xanthate collectors and 2# oil to sort for the pyrite that contains more charcoal shale and coal-series pyrite, sorting is very poor, even there is not a sorting, main cause is because charcoal shale mineral grain is tiny, specific area is large, be adsorbed on to non-selectivity mineral surfaces, have a strong impact on pyritous normal flotation, floatation process is worsened, some technical staff alleviates charcoal shale mineral to the interference of floatation process by adding waterglass, but DeGrain there is no effective solution up to now.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provide a kind of new, workable, flotation efficiency is high be fit to contain charcoal shale and coal-series pyrite effectively contain the pyritous floatation process of charcoal shale.
Technical problem to be solved by this invention can realize by following technical scheme.The present invention is a kind of pyritous floatation process of charcoal shale that contains, and is characterized in, the steps include:
(1) get the raw material pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding then that water sizes mixing to weight percent concentration is the ore pulp of 20-50%;
(2) after ore pulp flows into tank diameter, add respectively adjusting agent, collecting agent and foaming agent in the ore pulp and size mixing; Material after sizing mixing enters floatation system and carries out flotation, and floatation process is one roughing, triple cleaning, a smart chats select again at least; Each operation adds in adjusting agent, collecting agent and the blowing agent one or more as required; During flotation: the interior product of initial separatory cell is flotation tailing 1, discharges and stacks, and roughly selects foam and carries out primary cleaning, and product is that a smart chats selects again in the primary cleaner, and selecting the interior product of groove is mine tailing 2 again, and mine tailing 2 and mine tailing 1 merge to discharge to be stacked; The primary cleaning foam carries out recleaning, and product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove; The recleaning foam carries out triple cleaning, and product is that three smart chats return a smart operation in the triple cleaning groove, and the triple cleaning froth pulp is the sulphur ore product; The adjusting agent that flotation is used is lignin, consumption is the 0.02-2.00kg/t raw ore, collecting agent is the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed weight is than being ethyl xanthogenate: butyl xanthate=1-5: 1, consumption is the 0.02-0.50kg/t raw ore, foaming agent is No. 2 (flotation) oil, and consumption is the 0.01-0.20kg/t raw ore.
The above-described optimal technical scheme that contains the pyritous floatation process technical scheme of charcoal shale is:
1, the triple cleaning foam can be carried out four times selected, four smart chats return two smart operations; Four selected froth pulps are through concentrating, filter the sulphur ore product that gets product.Can also be again with four selected foams carry out five times selected, five smart chats return three smart operations; The final cleaning froth pulp is through concentrating, filter the sulphur ore product that gets product.Can obtain on demand more high-grade sulphur ore like this.
2, the raw material of technique of the present invention can be common pyrite ore raw material, and the S grade that preferably is adapted to pyrite ore is 10-20%, and organic carbon C content is 0.5-10%.Also be applicable to other grade and contain the pyritous ore dressing of charcoal shale.
3, the consumption of the adjusting agent lignin of flotation use is preferably the 0.5-1.00kg/t raw ore, in the mixing xanthate of collecting agent ethyl xanthogenate and butyl xanthate, the mixed weight ratio is preferably ethyl xanthogenate: butyl xanthate=2-3: 1, consumption is preferably the 0.1-0.30kg/t raw ore, and the consumption of No. 2 oil of foaming agent is preferably the 0.05-0.10kg/t raw ore.Described No. 2 (flotation) oil also claim terpenic oil, and it can be No. 2 (flotation) oil of disclosed any floating agent in the prior art, also can be commercially available No. 2 (flotation) oil or terpenic oil.
Compared with prior art, technique of the present invention has successfully realized containing charcoal shale pyrite beneficiation enrichment, and it has the following advantages:
(1) adopts lignin as floatation regulator, effectively disperse and suppressed charcoal shale mineral, alleviated its interference to floatation process;
(2) take a smart chats is selected and discharge mine tailing 2 again, find out second outlet for charcoal shale mineral, effectively reduced the vicious circle in closed circuit flow process of charcoal shale mineral, guaranteed normally carrying out of flotation;
(3) three smart chats, four smart chats, five smart chats return every operation, have guaranteed the quality of final concentrate;
(4) adopt the mixing xanthate, effectively utilized the cooperative effect between the medicament, improved the collecting ability of medicament with selective, guaranteed quality and the sorting of froth pulp;
(5) technique of the present invention also has efficiency of separation height, and technic index is excellent, gained sulphur ore quality advantages of higher.
Description of drawings
Fig. 1 is a kind of process chart of the present invention.
The specific embodiment
With reference to the accompanying drawings, further describe concrete implementer's case of the present invention.
Embodiment 1.With reference to Fig. 1.A kind of pyritous floatation process of charcoal shale that contains the steps include:
(1) get the raw material pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding then that water sizes mixing to weight percent concentration is 20% ore pulp;
(2) after ore pulp flows into tank diameter, add respectively adjusting agent, collecting agent and foaming agent in the ore pulp and size mixing; Material after sizing mixing enters floatation system and carries out flotation, and floatation process is that one roughing, triple cleaning, a smart chats select again; Each operation adds in adjusting agent, collecting agent and the blowing agent one or more as required; During flotation: the interior product of initial separatory cell is flotation tailing 1, discharges and stacks, and roughly selects foam and carries out primary cleaning, and product is that a smart chats selects again in the primary cleaner, and selecting the interior product of groove is mine tailing 2 again, and mine tailing 2 and mine tailing 1 merge to discharge to be stacked; The primary cleaning foam carries out recleaning, and product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove; The recleaning foam carries out triple cleaning, and product is that three smart chats return a smart operation in the triple cleaning groove, and the triple cleaning froth pulp is the sulphur ore product; The adjusting agent that flotation is used is lignin, and consumption is the 0.02kg/t raw ore, and collecting agent is the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed weight is than being ethyl xanthogenate: butyl xanthate=1: 1, consumption is the 0.02kg/t raw ore, and foaming agent is No. 2 oil, and consumption is the 0.01kg/t raw ore.
Embodiment 2.With reference to Fig. 1.A kind of pyritous floatation process of charcoal shale that contains the steps include:
(1) get the raw material pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding then that water sizes mixing to weight percent concentration is 50% ore pulp;
(2) after ore pulp flows into tank diameter, add respectively adjusting agent, collecting agent and foaming agent in the ore pulp and size mixing; Material after sizing mixing enters floatation system and carries out flotation, and floatation process is that one roughing, triple cleaning, a smart chats select again; Each operation adds in adjusting agent, collecting agent and the blowing agent one or more as required; During flotation: the interior product of initial separatory cell is flotation tailing 1, discharges and stacks, and roughly selects foam and carries out primary cleaning, and product is that a smart chats selects again in the primary cleaner, and selecting the interior product of groove is mine tailing 2 again, and mine tailing 2 and mine tailing 1 merge to discharge to be stacked; The primary cleaning foam carries out recleaning, and product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove; The recleaning foam carries out triple cleaning, and product is that three smart chats return a smart operation in the triple cleaning groove, and the triple cleaning froth pulp is the sulphur ore product; The adjusting agent that flotation is used is lignin, and consumption is the 2.00kg/t raw ore, and collecting agent is the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed weight is than being ethyl xanthogenate: butyl xanthate=5: 1, consumption is the 0.50kg/t raw ore, and foaming agent is No. 2 oil, and consumption is the 0.20kg/t raw ore.
Embodiment 3.With reference to Fig. 1.A kind of pyritous floatation process of charcoal shale that contains, the steps include: to contain charcoal shale pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 30% ore pulp, then flow into tank diameter, in ore pulp, add respectively adjusting agent again, collecting agent and foaming agent are sized mixing, material after sizing mixing enters floatation system and carries out flotation, floatation process is that one roughing triple cleaning one smart chats selects again, product is flotation tailing 1 in the initial separatory cell, discharge and stack, roughly select foam and add adjusting agent, after sizing mixing, collecting agent and foaming agent carry out primary cleaning, product is that a smart chats adds adjusting agent in the primary cleaner, after sizing mixing, collecting agent and foaming agent select again, selecting the interior product of groove is mine tailing 2 again, merging discharge with mine tailing 1 stacks, after sizing mixing, primary cleaning foam adding collecting agent and foaming agent carry out recleaning, product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove, after sizing mixing, recleaning foam adding collecting agent carries out triple cleaning, product is that three smart chats return a smart operation in the triple cleaning groove, and the triple cleaning froth pulp is through concentrated, the filtration sulphur ore product that gets product.Contain consisting of of charcoal shale pyrite ore in the present embodiment: the S grade is 16%, and organic carbon C content is 3.0%; The adjusting agent lignin consumption that flotation is used is the 0.60kg/t raw ore; The collecting agent that flotation is used is ethyl xanthogenate as the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed proportion: butyl xanthate=3: 1, consumption are 0.30kg/t; The foaming agent that flotation is used is No. 2 oil, and consumption is the 0.15kg/t raw ore.
Embodiment 4.With reference to Fig. 1.A kind of pyritous floatation process of charcoal shale that contains, the steps include: to contain charcoal shale pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 40% ore pulp, then flow into tank diameter, in ore pulp, add respectively adjusting agent again, collecting agent and foaming agent are sized mixing, material after sizing mixing enters floatation system and carries out flotation, floatation process is that four selected one smart chats of one roughing select again, product is flotation tailing 1 in the initial separatory cell, discharge and stack, roughly select foam and add adjusting agent, after sizing mixing, collecting agent and foaming agent carry out primary cleaning, product is that a smart chats adds adjusting agent in the primary cleaner, after sizing mixing, collecting agent and foaming agent select again, selecting the interior product of groove is mine tailing 2 again, merging discharge with mine tailing 1 stacks, after sizing mixing, primary cleaning foam adding collecting agent and foaming agent carry out recleaning, product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove, after sizing mixing, recleaning foam adding collecting agent carries out triple cleaning, product is that three smart chats return a smart operation in the triple cleaning groove, the triple cleaning foam add carry out after collecting agent is sized mixing four times selected, product is that four smart chats return two smart operations in four cleaner cells, and four selected froth pulps are through concentrated, the filtration sulphur ore product that gets product.Contain consisting of of charcoal shale pyrite ore in the present embodiment: the S grade is 13%, and organic carbon C content is 7.0%; The adjusting agent lignin consumption that flotation is used is the 1.50kg/t raw ore; The collecting agent that flotation is used is ethyl xanthogenate as the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed proportion: butyl xanthate=4: 1, consumption are 0.15kg/t; The foaming agent that flotation is used is No. 2 oil, and consumption is the 0.10kg/t raw ore.
Embodiment 5.With reference to Fig. 1.A kind of pyritous floatation process of charcoal shale that contains, the steps include: to contain charcoal shale pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 45% ore pulp, then flow into tank diameter, in ore pulp, add respectively adjusting agent again, collecting agent and foaming agent are sized mixing, material after sizing mixing enters floatation system and carries out flotation, floatation process is that five selected one smart chats of one roughing select again, product is flotation tailing 1 in the initial separatory cell, discharge and stack, roughly select foam and add adjusting agent, after sizing mixing, collecting agent and foaming agent carry out primary cleaning, product is that a smart chats adds adjusting agent in the primary cleaner, after sizing mixing, collecting agent and foaming agent select again, selecting the interior product of groove is mine tailing 2 again, merging discharge with mine tailing 1 stacks, after sizing mixing, primary cleaning foam adding collecting agent and foaming agent carry out recleaning, product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove, after sizing mixing, recleaning foam adding collecting agent carries out triple cleaning, product is that three smart chats return a smart operation in the triple cleaning groove, the triple cleaning foam add carry out after collecting agent is sized mixing four times selected, product is that four smart chats return two smart operations in four cleaner cells, four selected foams add carry out after collecting agent is sized mixing five times selected, product is that five smart chats return three smart operations in five cleaner cells, and five selected froth pulps are through concentrated, the filtration sulphur ore product that gets product.Contain consisting of of charcoal shale pyrite ore in the present embodiment: the S grade is 10%, and organic carbon C content is 9.0%; The adjusting agent lignin consumption that flotation is used is the 1.90kg/t raw ore; The collecting agent that flotation is used is ethyl xanthogenate as the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed proportion: butyl xanthate=5: 1, consumption are 0.08kg/t; The foaming agent that flotation is used is No. 2 oil, and consumption is the 0.07kg/t raw ore.
Embodiment 6.With reference to accompanying drawing 1, contain the pyritous flotation experiment of charcoal shale one (if no special instructions, processing step is with experimental example 1).
Contain charcoal shale pyrite sample for the Inner Mongol, raw ore S grade is 15.29%, organic carbon C content is 4.0%, mog is 200 orders 70%, floatation concentration is about 30%, roughing flotation adds lignin 0.60kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=3: 1) 0.15kg/t, 2# oil 0.07kg/t; One finishing enters lignin 0.07kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=3: 1) 0.04kg/t, 2# oil 0.01kg/t; Choosing adds lignin 0.03kg/t again, mixes xanthate (ethyl xanthogenate: butyl xanthate=3: 1) 0.03kg/t, 2# oil 0.01kg/t; Two finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=3: 1) 0.02kg/t, 2# oil 0.01kg/t; Three finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=3: 1) 0.02kg/t; Can obtain the S grade after one roughing triple cleaning one smart chats selects closed circuit flow process to sort again is that 43.94%, C is 0.83% high-quality phosphorus concentrate, and the S rate of recovery is 79.47%.
Embodiment 7.Contain the pyritous flotation experiment of charcoal shale two (if no special instructions, processing step is with experimental examples 4).
Contain charcoal shale pyrite sample for the Inner Mongol, raw ore S grade is 15.15%, organic carbon C content is 4.5%, mog is 200 orders 83%, floatation concentration is about 33%, roughing flotation adds lignin 0.60kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.12kg/t, 2# oil 0.04kg/t; One finishing enters lignin 0.05kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.04kg/t, 2# oil 0.02kg/t; Choosing adds lignin 0.03kg/t again, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.03kg/t, 2# oil 0.01kg/t; Two finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t, 2# oil 0.01kg/t; Three finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t; Four finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.01kg/t; Can obtain the S grade after four selected one smart chats of one roughing select closed circuit flow process to sort again is that 45.92%, C is 0.78% high-quality phosphorus concentrate, and the S rate of recovery is 72.52%.
Embodiment 8.Contain the pyritous flotation experiment of charcoal shale two (if no special instructions, processing step is with experimental examples 5).
Contain charcoal shale pyrite sample for the Inner Mongol, raw ore S grade is 15.03%, organic carbon C content is 4.7%, mog is 200 orders 83%, floatation concentration is about 35%, roughing flotation adds lignin 0.70kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.10kg/t, 2# oil 0.05kg/t; One finishing enters lignin 0.06kg/t, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.05kg/t, 2# oil 0.02kg/t; Choosing adds lignin 0.02kg/t again, mixes xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t, 2# oil 0.01kg/t; Two finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t, 2# oil 0.01kg/t; Three finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t; Four finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.02kg/t; Five finishings enter to mix xanthate (ethyl xanthogenate: butyl xanthate=4: 1) 0.01kg/t; Can obtain the S grade after five selected one smart chats of one roughing select closed circuit flow process to sort again is that 48.39%, C is 0.71% high-quality phosphorus concentrate, and the S rate of recovery is 61.16%.
Claims (5)
1. one kind contains the pyritous floatation process of charcoal shale, it is characterized in that, the steps include:
(1) get the raw material pyrite ore, make the mineral composition monomer dissociation through broken ore grinding, adding then that water sizes mixing to weight percent concentration is the ore pulp of 20-50%;
(2) after ore pulp flows into tank diameter, add respectively adjusting agent, collecting agent and foaming agent in the ore pulp and size mixing; Material after sizing mixing enters floatation system and carries out flotation, and floatation process is one roughing, triple cleaning, a smart chats select again at least; Each operation adds in adjusting agent, collecting agent and the blowing agent one or more as required; During flotation: the interior product of initial separatory cell is flotation tailing 1, discharges and stacks, and roughly selects foam and carries out primary cleaning, and product is that a smart chats selects again in the primary cleaner, and selecting the interior product of groove is mine tailing 2 again, and mine tailing 2 and mine tailing 1 merge to discharge to be stacked; The primary cleaning foam carries out recleaning, and product is two smart chats and selects froth pulp to merge to return again and roughly select operation in the recleaning groove; The recleaning foam carries out triple cleaning, and product is that three smart chats return a smart operation in the triple cleaning groove, and the triple cleaning froth pulp is the sulphur ore product; The adjusting agent that flotation is used is lignin, consumption is the 0.02-2.00kg/t raw ore, collecting agent is the mixing xanthate of ethyl xanthogenate and butyl xanthate, mixed weight is than being ethyl xanthogenate: butyl xanthate=1-5: 1, consumption is the 0.02-0.50kg/t raw ore, foaming agent is No. 2 oil, and consumption is the 0.01-0.20kg/t raw ore.
2. the pyritous floatation process of charcoal shale that contains according to claim 1 is characterized in that: with the triple cleaning foam carry out four times selected, four smart chats return two smart operations; Four selected froth pulps are through concentrating, filter the sulphur ore product that gets product.
3. the pyritous floatation process of charcoal shale that contains according to claim 2 is characterized in that: with four selected foams carry out five times selected, five smart chats return three smart operations; The 5th selected froth pulp is through concentrating, filter the sulphur ore product that gets product.
4. according to claim 1 and 2 or the 3 described pyritous floatation process of charcoal shale that contain, it is characterized in that: the S grade of raw material pyrite ore is 10-20%, and organic carbon C content is 0.5-10%.
5. according to claim 1 and 2 or the 3 described pyritous floatation process of charcoal shale that contain, it is characterized in that: the consumption of the adjusting agent lignin that flotation is used is the 0.5-1.00kg/t raw ore, in the mixing xanthate of collecting agent ethyl xanthogenate and butyl xanthate, mixed weight is than being ethyl xanthogenate: butyl xanthate=2-3: 1, consumption is the 0.1-0.30kg/t raw ore, and the consumption of No. 2 oil of foaming agent is the 0.05-0.10kg/t raw ore.
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| CN102357427A (en) * | 2011-07-10 | 2012-02-22 | 重庆大学 | Combined agent for pyrite flotation |
| CN107243409B (en) * | 2017-07-27 | 2018-09-18 | 中钢集团马鞍山矿山研究院有限公司 | A kind of high-sulfur magnetic iron ore puies forward the beneficiation method of iron sulfur reduction |
| CN108262173A (en) * | 2018-01-20 | 2018-07-10 | 华北科技学院 | A kind of coal slime cooperates with floatation process |
| CN113042216B (en) * | 2021-03-09 | 2022-06-03 | 中南大学 | Flotation separation method for carbonaceous lead sulfide zinc minerals |
| CN113522516B (en) * | 2021-07-12 | 2022-09-23 | 中南大学 | Preparation method of high-purity natural pyrite |
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| CN101733190A (en) * | 2008-11-25 | 2010-06-16 | 宝钢集团上海梅山有限公司 | Benefication method for sulphur-containing composite iron tailing |
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| US5693692A (en) * | 1988-05-02 | 1997-12-02 | Huntsman Petrochemical Corp. | Depressant for flotation separation of polymetallic sulphide ores |
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| CN101254484A (en) * | 2007-07-31 | 2008-09-03 | 中南大学 | High-efficiency cleaning mineral separation process of complicated sulfuration mine |
| CN101259451A (en) * | 2008-04-24 | 2008-09-10 | 中南大学 | Preparation of floating collector |
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