CN1322934C - Collophanite direct flotation and reverse flotation technique - Google Patents
Collophanite direct flotation and reverse flotation technique Download PDFInfo
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- CN1322934C CN1322934C CNB2005100412816A CN200510041281A CN1322934C CN 1322934 C CN1322934 C CN 1322934C CN B2005100412816 A CNB2005100412816 A CN B2005100412816A CN 200510041281 A CN200510041281 A CN 200510041281A CN 1322934 C CN1322934 C CN 1322934C
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Abstract
The present invention relates to a collophanite direct flotation and reverse flotation technique which is characterized in that silicon-calcium collophanite ores are crushed and ground to enable composite ore monomers to dissociate; water is added to regulate slurry until the concentration of ore slurry is from 20 to 50%; then, the ore slurry flows into an agitating tank; water glass as a modifying agent and direct flotation collector are respectively added into the ore slurry to regulate the ore slurry; materials enter a direct flotation system to carry out direct flotation after the ore slurry is regulated; direct flotation froth products enter a reverse flotation agitating tank; mineral acid as a reverse flotation modifying agent and reverse flotation collector are respectively added into the direct flotation froth products to regulate the ore slurry; materials enter a reverse flotation system to carry out the reverse flotation of carbonate gangue minerals after the ore slurry is regulated; froth products are reverse flotation tailings which are exhausted to be stacked; products in the tanks are ore concentrate with low magnesium and phosphorus, and are prepared into final concentrate by concentration, filtration and drying; the temperature of the ore slurry is from 10 to 30 DEG C in the direct flotation and the reverse flotation. The collophanite direct flotation and reverse flotation technique simplifies agent regime, saves expenses, decreases energy consumption and improves the water quality of refined tailings; the water of the refined tailings can be circularly used.
Description
Technical field
The present invention relates to a kind of flotation of phosphate rock technology, particularly relate to the positive reverse floatation process of low-grade appositional pattern silico-calcium matter collophane in a kind of being fit to.
Background technology
The phosphorus ore thing is an important chemical material, along with the social technology expanding economy, the demand of rock phosphate in powder is constantly increased, and easily adopts rich ore and easily select the reserves of phosphorus ore to reduce day by day.Therefore, how the phosphorus ore of poor and difficult choosing is carried out effectively and economic enrichment has caused the common concern of world's phosphorus ore circle.Particularly the technique of preparing of the big calcareous type collophane of depositing silicon of reserves general election mine disaster degree is more attracted attention.Deposition phosphorite ore deposit (phosphorus ore containing is a collophane) is a topmost rock phosphate in powder in world's phosphate rock resource, accounts for more than 70% of world's phosphorus ore gross reserves, wherein the reserves maximum the most difficult choosing be in low-grade silico-calcium matter collophane.In ore dressing process, simultaneously behind expelling carbonate and the silicate impurity, could satisfy the requirement of phosphate fertilizer processing to this class ore.At present the most employing floatation of sorting of this type ore is carried out enrichment both at home and abroad, usually the floatation process of using has: positive reverse flotation, flotation anyway, two reverse flotation and direct flotation technology, every kind of technology all has the advantage of self, also exists significantly not enough simultaneously.Wherein the essence of positive reverse floatation process is bulk flotation, at first mix and float floatability close phosphorus ore thing and carbonate mineral by direct flotation, get rid of a large amount of silicate gangue mineral and part carbonate gangue mineral, then direct flotation rough concentrate (mainly being phosphorus ore thing and dolomite) is carried out anti-floating carbonate mineral again, to reduce the concentrate magnesium content, obtain the high-quality phosphorus concentrate of low magnesium phosphorus ratio.The beneficiating technology index of positive reverse floatation process is advanced, and this technology obtains phosphorus concentrate quality height, and MgO content is low, meets the quality requirement of phosphoric acid by wet process with the ore deposit.But positive reverse floatation process exists significantly not enough in the prior art: 1. the floating agent kind is many, direct flotation will add sodium carbonate, waterglass, wooden calcium sulfonate or S711 and adjust agent, oxidized paraffin wax soaps etc. are made collecting agent, and reverse flotation also will add acid and adjust agent and add collecting agent; 2. the floating agent consumption is big, at first be that alkali consumption is big, sodium carbonate amount is generally more than 4kg/t, next is that the respective acids consumption is also big, because reverse flotation need carry out in weak acidic medium, and direct flotation carries out in alkaline medium, and ore pulp transfers to faintly acid (pH5-6) from alkalescence (pH 9-10) needs to consume more acid; 3. flotation pulp temperature height, the direct flotation ore pulp generally will be warmed to more than 42 ℃, causes energy resource consumption big; 4. recycling water utilization difficulty because the medicament kind that adds is many, interferes with each other manyly between each medicament, cause beneficiation wastewater to recycle difficulty; 5. beneficiation cost height because dosing is big and factor such as the flotation of heating, causes the beneficiation cost height, thereby causes this technology industrialization difficulty.
Summary of the invention
Technical problem to be solved by this invention is at the deficiencies in the prior art, provide low-grade silico-calcium matter collophane in a kind of being suitable for, can normal temperature so flotation at low temperature, that flowage structure is simple, sorting is high, can not only overcome the pipeline scale defective, and can significantly improve phosphorus concentrate P
2O
5The positive reverse floatation process of the collophane of the rate of recovery.
Technical problem to be solved by this invention can realize by following technical scheme.The present invention is the positive reverse floatation process of a kind of collophane, be characterized in, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is the ore pulp of 20-50%, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, the flowage structure of described direct flotation system is by roughly selecting operation and scanning operation and form jointly, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; The flowage structure of described reverse flotation system is elected to be industry again and forms jointly by roughly selecting operation and foam, and adding adjustment agent inorganic acid is sized mixing before foam selects again; Described adjustment agent inorganic acid is the mixture of phosphoric acid or sulfuric acid and phosphoric acid; And when above-mentioned direct flotation and reverse flotation slurry temperature 10-30 ℃.
The ore dressing of low-grade silico-calcium matter type collophane during technology of the present invention is specially adapted to, its raw ore composition is generally: P
2O
5Grade is 10-30%, and MgO content is 1-10%, and A.I (acid non-soluble substance) is 5-40%.Also be applicable to the ore dressing of other grade silico-calcium matter type collophane.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in, the adjustment agent waterglass consumption that direct flotation uses is the 1-20kg/t raw ore.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in that the collector dosage that direct flotation uses is the 0.3-3kg/t raw ore.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in, the flowage structure of direct flotation system by roughly select, selected and scan operation and form jointly.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in, the consumption of the mixture of described adjustment agent inorganic acid sulfuric acid and phosphoric acid is the 7.0-8.0kg/t raw ore.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in, in the mixture of described adjustment agent inorganic acid sulfuric acid and phosphoric acid, the weight ratio of sulfuric acid and phosphoric acid is 1: 1.
Technical problem to be solved by this invention can also further be realized by following technical scheme.The positive reverse floatation process of above-described a kind of collophane is characterized in, the consumption of described adjustment agent inorganic acid phosphoric acid is the 5.0kg/t raw ore.
Compared with prior art, technology of the present invention has overcome the alkali consumption big (sodium carbonate amount is greater than 4kg/t) that exists in the direct flotation phosphorus ore thing technology in the prior art, the defective of flotation pulp temperature requirement height (more than 42 ℃), technology of the present invention is to carry out under the condition of alkali-free and normal temperature, this not only can simplify regime of agent, saves medicament expense usefulness, cuts down the consumption of energy, also improve simultaneously smart, mine tailing water quality, be smart, the recycling condition of having created of tailing water.Advantages such as technology of the present invention also has efficiency of separation height, and technic index is excellent, and MgO content is lower in the gained phosphorus concentrate, and concentrate quality is higher, and final products phosphorus concentrate integrated cost is lower.
Description of drawings
Accompanying drawing is a 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.The positive reverse floatation process of a kind of collophane, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 20% ore pulp, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; And slurry temperature is 10 ℃ when above-mentioned direct flotation and reverse flotation.
Embodiment 2.The positive reverse floatation process of a kind of collophane, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 50% ore pulp, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; And slurry temperature is 30 ℃ when above-mentioned direct flotation and reverse flotation.
Embodiment 3.The positive reverse floatation process of a kind of collophane, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 30% ore pulp, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; And slurry temperature is 20 ℃ when above-mentioned direct flotation and reverse flotation; The consisting of of silico-calcium matter type collophane ore in the present embodiment: P
2O
5Grade is 10%, and MgO content is 1%, and the A.I acid non-soluble substance is 40%; The adjustment agent waterglass consumption that direct flotation uses is the 1kg/t raw ore; The collector dosage that direct flotation uses is the 0.3kg/t raw ore; It is sulfuric acid that reverse flotation is adjusted the agent inorganic acid.
Embodiment 4.The positive reverse floatation process of a kind of collophane, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 40% ore pulp, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; And slurry temperature is 15 ℃ when above-mentioned direct flotation and reverse flotation; The consisting of of silico-calcium matter type collophane ore in the present embodiment: P
2O
5Grade is 30%, and MgO content is 10%, and the A.I acid non-soluble substance is 5%; The adjustment agent waterglass consumption that direct flotation uses is the 20kg/t raw ore; The collector dosage that direct flotation uses is the 3kg/t raw ore; The flowage structure of direct flotation system by roughly select, selected and scan operation and form jointly; It is phosphoric acid that reverse flotation is adjusted the agent inorganic acid; The flowage structure of reverse flotation system by roughly select with foam be elected to be again the industry form jointly.
Embodiment 5.The positive reverse floatation process of a kind of collophane, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is 45% ore pulp, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; And slurry temperature is 25 ℃ when above-mentioned direct flotation and reverse flotation; The consisting of of silico-calcium matter type collophane ore in the present embodiment: P
2O
5Grade is 20%, and MgO content is 5%, and the A.I acid non-soluble substance is 20%; The adjustment agent waterglass consumption that direct flotation uses is the 10kg/t raw ore; The collector dosage that direct flotation uses is the 1kg/t raw ore; The flowage structure of direct flotation system is only for roughly selecting operation; It is the mixture of sulfuric acid and phosphoric acid that reverse flotation is adjusted the agent inorganic acid; The flowage structure of reverse flotation system is for roughly selecting operation.
Embodiment 6.For low-grade silicon calcium quality phosphorus block rock sample in the hubei baokang phosphorus ore, raw ore P
2O
5Grade is 23.42%, MgO content is 3.88%, mog is 200 orders 70%, flotation temperature is about 25 ℃, direct flotation adds waterglass 7.0kg/t, collecting agent 141.9kg/t, and reverse flotation adds nitration mixture (sulfuric acid: phosphoric acid is 1: 1) 8.0kg/t, collecting agent 641.0kg/t can obtain P after the closed circuit flow process of the positive reverse flotation of accompanying drawing sorts
2O
5Grade is 31.96%, and MgO is 0.61% high-quality phosphorus concentrate, P
2O
5The rate of recovery is 88.09%, and the elimination factor of MgO reaches 89.95%.
Embodiment 7.For low-grade silicon calcium quality phosphorus block rock sample in the phosphorus ore of Anning, raw ore P
2O
5Grade is 22.44%, MgO content is 3.25%, mog is 200 orders 80%, flotation temperature is about 15 ℃, direct flotation adds waterglass 7.0kg/t, collecting agent 141.5kg/t, and reverse flotation adds nitration mixture (sulfuric acid: phosphoric acid is 1: 1) 7.0kg/t, collecting agent 64 0.8kg/t can obtain P after the closed circuit flow process of the positive reverse flotation of accompanying drawing sorts
2O
5Grade is 30.35%, and MgO is 0.48% qualified phosphorus concentrate, P
2O
5The rate of recovery is 86.99%, and the elimination factor of MgO reaches 90.46%.
Embodiment 8.For the sample of low-grade silicon calcium quality phosphorus block rock in the phosphorus ore of Yichang after dense media is thrown tail, raw ore P
2O
5Grade is 25.88%, MgO content is 2.85%, mog is 200 orders 70%, flotation temperature is about 20 ℃, direct flotation adds waterglass 8.0kg/t, collecting agent 14 1.7kg/t, and reverse flotation adds phosphoric acid 5.0kg/t, collecting agent 64 0.7kg/t can obtain P after the closed circuit flow process of the positive reverse flotation of accompanying drawing sorts
2O
5Grade is 32.65%, and MgO is 0.42% high-quality phosphorus concentrate, P
2O
5The rate of recovery is 92.15%, and the elimination factor of MgO reaches 89.24%.
Claims (8)
1, the positive reverse floatation process of a kind of collophane, it is characterized in that, with silico-calcium matter type collophane ore, make the mineral composition monomer dissociation through broken ore grinding, adding that water sizes mixing to concentration is the ore pulp of 20-50%, flow into tank diameter then, adding adjustment agent waterglass and direct flotation collecting agent again in ore pulp respectively sizes mixing, material after sizing mixing enters the direct flotation system and carries out direct flotation, the flowage structure of described direct flotation system is by roughly selecting operation and scanning operation and form jointly, product is the direct flotation mine tailing in the groove, discharge and stack, the direct flotation froth pulp enters the reverse flotation tank diameter, and reverse flotation is adjusted the agent inorganic acid and collecting agent in reverse floatation is sized mixing to wherein adding respectively, and the material after sizing mixing enters the reverse flotation system and carries out carbonate gangue mineral reverse flotation, the gained froth pulp is the reverse flotation mine tailing, discharge and stack, product is low magnesium phosphorus concentrate in the groove, through concentrating, filter, be drying to obtain the finished product concentrate; The flowage structure of described reverse flotation system is elected to be industry again and forms jointly by roughly selecting operation and foam, and adding adjustment agent inorganic acid is sized mixing before foam selects again; Described adjustment agent inorganic acid is the mixture of phosphoric acid or sulfuric acid and phosphoric acid; And when above-mentioned direct flotation and reverse flotation slurry temperature 10-30 ℃.
2, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the consisting of of silico-calcium matter type collophane ore: P
2O
5Grade is 10-30%, and MgO content is 1-10%, and the A.I acid non-soluble substance is 5-40%.
3, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the adjustment agent waterglass consumption that direct flotation uses is the 1-20kg/t raw ore.
4, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the collector dosage that direct flotation uses is the 0.3-3kg/t raw ore.
5, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the flowage structure of direct flotation system by roughly select, selected and scan operation and form jointly.
6, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the consumption of the mixture of described adjustment agent inorganic acid sulfuric acid and phosphoric acid is the 7.0-8.0kg/t raw ore.
7, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, in the mixture of described adjustment agent inorganic acid sulfuric acid and phosphoric acid, the weight ratio of sulfuric acid and phosphoric acid is 1: 1.
8, the positive reverse floatation process of a kind of collophane according to claim 1 is characterized in that, the consumption of described adjustment agent inorganic acid phosphoric acid is the 5.0kg/t raw ore.
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| CNB2005100412816A CN1322934C (en) | 2005-07-30 | 2005-07-30 | Collophanite direct flotation and reverse flotation technique |
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| CN1153085A (en) * | 1995-12-26 | 1997-07-02 | 武汉化工学院 | Ordinary temp. froth flotation collector for collophanite |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153085A (en) * | 1995-12-26 | 1997-07-02 | 武汉化工学院 | Ordinary temp. froth flotation collector for collophanite |
Non-Patent Citations (4)
| Title |
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| 胶磷矿无碱常温浮选工艺的研究 马晓青，矿业快报，第390卷 2002 * |
| 胶磷矿无碱常温浮选工艺的研究 马晓青，矿业快报，第390期 2002 * |
| 胶磷矿无碱常温浮选工艺的研究 马晓青，矿业快报，第390期 2002;胶磷矿无碱常温浮选工艺的研究 马晓青，矿业快报，第390卷 2002;胶磷矿无碱常温浮选工艺研究 马晓青，中国矿业，第11卷第5期 2002 * |
| 胶磷矿无碱常温浮选工艺研究 马晓青，中国矿业，第11卷第5期 2002 * |
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