CN102513203A - Method for recycling high-phosphorus/sulfur siderite resource - Google Patents
Method for recycling high-phosphorus/sulfur siderite resource Download PDFInfo
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- 229910021646 siderite Inorganic materials 0.000 title claims abstract description 42
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000011593 sulfur Substances 0.000 title claims abstract description 26
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 26
- 239000011574 phosphorus Substances 0.000 title claims abstract description 20
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 20
- 238000004064 recycling Methods 0.000 title claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 101
- 229910052742 iron Inorganic materials 0.000 claims abstract description 51
- 238000005188 flotation Methods 0.000 claims abstract description 37
- 230000005291 magnetic effect Effects 0.000 claims abstract description 23
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 20
- 239000012141 concentrate Substances 0.000 claims abstract description 20
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000005189 flocculation Methods 0.000 claims abstract description 12
- 230000016615 flocculation Effects 0.000 claims abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 10
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 claims description 39
- 239000006260 foam Substances 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 26
- 229920002472 Starch Polymers 0.000 claims description 18
- OTYNBGDFCPCPOU-UHFFFAOYSA-N phosphane sulfane Chemical compound S.P[H] OTYNBGDFCPCPOU-UHFFFAOYSA-N 0.000 claims description 18
- 235000019698 starch Nutrition 0.000 claims description 18
- 239000008107 starch Substances 0.000 claims description 18
- 229910001608 iron mineral Inorganic materials 0.000 claims description 15
- 230000003009 desulfurizing effect Effects 0.000 claims description 12
- 239000004088 foaming agent Substances 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 10
- 239000000194 fatty acid Substances 0.000 claims description 10
- 229930195729 fatty acid Natural products 0.000 claims description 10
- 150000004665 fatty acids Chemical class 0.000 claims description 10
- 239000003784 tall oil Substances 0.000 claims description 10
- QCJQWJKKTGJDCM-UHFFFAOYSA-N [P].[S] Chemical compound [P].[S] QCJQWJKKTGJDCM-UHFFFAOYSA-N 0.000 claims description 9
- 239000002817 coal dust Substances 0.000 claims description 6
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 239000000344 soap Substances 0.000 claims description 6
- 239000003921 oil Substances 0.000 claims description 5
- UOJYYXATTMQQNA-UHFFFAOYSA-N Proxan Chemical compound CC(C)OC(S)=S UOJYYXATTMQQNA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052586 apatite Inorganic materials 0.000 claims description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical class CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 4
- VSIIXMUUUJUKCM-UHFFFAOYSA-D pentacalcium;fluoride;triphosphate Chemical group [F-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O VSIIXMUUUJUKCM-UHFFFAOYSA-D 0.000 claims description 4
- CONMNFZLRNYHIQ-UHFFFAOYSA-N 3-methylbutoxymethanedithioic acid Chemical compound CC(C)CCOC(S)=S CONMNFZLRNYHIQ-UHFFFAOYSA-N 0.000 claims description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002989 phenols Chemical class 0.000 claims description 3
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 2
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 2
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 2
- 239000005642 Oleic acid Substances 0.000 claims description 2
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000706 filtrate Substances 0.000 claims description 2
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 2
- 229910052683 pyrite Inorganic materials 0.000 claims description 2
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 2
- 239000011028 pyrite Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 12
- 238000000926 separation method Methods 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 abstract 2
- 239000005864 Sulphur Substances 0.000 description 14
- 238000005516 engineering process Methods 0.000 description 10
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000007885 magnetic separation Methods 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 235000003283 Pachira macrocarpa Nutrition 0.000 description 2
- 241001083492 Trapa Species 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 235000009165 saligot Nutrition 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
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- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 235000019580 granularity Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002505 iron Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
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- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 235000020985 whole grains Nutrition 0.000 description 1
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Abstract
The invention discloses a method for recycling high-phosphorus/sulfur siderite resources. The method comprises the following steps: finely grinding the raw ore, and removing phosphorus and sulfur by asynchronous reverse flotation, to obtain low-phosphorus/sulfur crude concentrate; subjecting the crude concentrate to reduction roasting in a roasting furnace while adding sodium carbonate, to obtain reduced roasted ore; and performing magnetic flocculation-enhanced separation. The process can not only increase the concentrate grade but also effectively improve recovery of magnetic minerals at fine-particle level and micro-fine-particle level and achieve advanced removal of phosphorus and sulfur from the roasted ore, greatly increases the recycling rate of a great amount of refractory high-phosphorus/sulfur siderite resources, and produces iron concentrate having iron grade of more than 65%, iron recovery rate of more than 65%, phosphorus content of less than 0.20% and sulfur content of less than 0.3%.
Description
Technical field
The present invention relates to a kind of method of from the siderite resource that contains high phosphorus, high-sulfur, recycling iron resource, belong to the ore dressing metallurgical technology field.
Background technology
Siderite is a kind of traditional iron ore deposit, but because self ferrous grade is low, unique, this iron ore deposit does not obtain widespread usage.At present, some mineral compositions are simple relatively, and the siderite resource that objectionable impurities content is lower begins to be able to utilize, and major part contains the siderite resource of high phosphorus sulphur and belongs to dull difficult ore dressing basically and produce resource.The recycling of relevant high phosphorus-sulfur siderite resource is that ore dressing field does not have the basic technical barrier that solves always, also is the hot issue of research.
High phosphorus-sulfur siderite is mainly composed and is stored in appositional pattern and the part contact metasomatism hot-liquid type iron ore-deposit, and wherein harmful element phosphorus mainly exists with the form of apatite, and harmful element sulphur mainly exists with the form of sulphide ore.At present, high phosphorus-sulfur siderite has been carried out many research both at home and abroad, but production instance is rare.The high phosphorus-sulfur siderite evaluation and exploration technology relate generally to following some: the 1) effective elimination of objectionable impurities phosphorus, sulphur; 2) with the siderite be the abundant conversion of master's weak magnetism mineral magnetropism iron; 3) effective recovery of Armco magnetic iron mineral.High phosphorus-sulfur siderite can obtain containing ferromagnetic roast ore after calcination process, Armco magnetic iron wherein can be used as the raw material of ironmaking.But its precondition is at first to realize the abundant conversion of siderite magnetropism iron, and then realizes the high efficiency separation of Armco magnetic iron and phosphorous sulphur slag.
Application number is that " beneficiation methods of weakly magnetic iron ores such as a kind of Ling Tie Kuang ﹑ He Tie Kuang ﹑ and water chestnut limonite mineral intergrowth " disclosed technological process of 200610031735.6 comprises roasting Jie Duan ﹑ magnetic separation stage and reverse flotation stage.This technology has realized the coal-based rotary kiln wholegrain level siderite magnetizing roast large-scale industrial production under the air-proof condition, but the shortcoming of this method is that technology Fu Za ﹑ control difficulty Da ﹑ beneficiation cost is high.This technology also is difficult to realize the effective elimination of phosphorus sulphur in the high phosphorus-sulfur siderite simultaneously.
Application number is " utilizing low-grade siderite to produce the technology of fine iron breeze " of 20061002265.4
And 200610069619.3 " a kind of limonite and siderite are produced the method and the reduction roaster of the smart powder of iron " is though these two kinds of technologies can obtain high-grade iron ore concentrate, owing to be under reducing atmosphere, to carry out the effective elimination that magnetizing roast can't realize sulphur in the high sulfur siderite.
Application number is that 201010272435.3 " utilization methods of siderite " impels sulphur to be discharged to the high grade iron concentrate that removes and obtain of realizing sulphur in the air with the form of gas under strong oxidizing atmosphere, but there is the serious problem of environmental pollution in this technology.
At present; It is simple relatively that the method for domestic main employing magnetizing roast-magnetic separation is handled mineral constituent, and the siderite that objectionable impurities content is lower is when containing the siderite of high phosphorus, high-sulfur as if these PROCESS FOR TREATMENT of employing; Its product quality difficulty reaches the requirement of production, can not make full use of these type of mineral resources.
Summary of the invention
The present invention is development and use high phosphorus-sulfur siderite resource, improves the iron grade and the rate of recovery of siderite concentrate, reduces phosphorus in the concentrate, the content of sulphur, the method that provides a kind of high phosphorus sulphur water chestnut ore resources to recycle.
The present invention realizes through following technical scheme:
1, raw ore is milled to-45 μ m (less than 45 μ m) grade, and the ore deposit weight percentage of-45 μ m granularities is greater than 90%; The control mog; Reaching the monomer dissociation of mineral through the fine grinding ore deposit, is that removing of phosphorus sulphur created good condition, but overgroundly will not only increase beneficiation cost; Can reduce floatation indicators simultaneously, the weight percentage that therefore preferred mog is-45 μ m grades is greater than 90%.
2, calculate by 1 ton of raw ore amount the slurry pH to 7 of regulating step 1 gained～9, adds the xanthate class collecting agent of 50～100 grams, and the foaming agent of 50～100 grams carries out reverse flotation desulfurizing, collects the sulfur-bearing foam.
3, calculate by 1 ton of raw ore amount underflow slurry pH to 9～11 of reverse flotation desulfurizing in the regulating step 2, adds the fatty acid collecting agent of 100～200 grams, carries out reverse flotation and roughly select dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 100～200 grams in the dephosphorization underflow ore pulp at reverse flotation, the fatty acid collecting agent of 20～50 grams carries out reverse flotation and scans dephosphorization, collects phosphorous foam 2; The starch that in phosphorous foam 1, adds 200～500 grams, the fatty acid collecting agent of 20～50 grams carries out selected 1 dephosphorization; Reclaim iron mineral wherein, collect phosphorous foam 3, phosphorous foam 2 and 3 is mixed and adds the starch of 200～500 grams; The fatty acid collecting agent of 100～300 grams carries out selected 2 dephosphorizations, reclaims iron mineral wherein; To scan, selected 1 and selected 2 underflows cross and filter filter residue and filtrating, filtrate cycle is used.
4, in the filter residue of the 3rd step dephosphorization reverse flotation, add 2%～5% sodium carbonate, 5%～10% coal dust at 900～1100 ℃ of roasting temperature 90min～150min, gets the reduction roasting ore deposit; Add of the conversion of an amount of sodium carbonate, thereby create good condition, do not add or add the reduction that excessive sodium carbonate all is unfavorable for siderite for the magnetic flocculation sorting with reinforcement siderite magnetropism iron mineral.
5, the weight percentage that the reduction roasting ore deposit of the 4th step is milled to-45 μ m grades is greater than 85%, through the conventional magnetic flocculation separating method that uses, iron ore concentrate.The mog in control reduction roasting ore deposit in this step; Reach dissociating of iron mineral and phosphorus ore containing through ore grinding; Thereby for iron and the good condition of degree of depth dephosphorization creation are put forward in the magnetic flocculation sorting; Being separated in the magnetic flocculation sorting post of Armco magnetic iron and slag accomplished in the reduction roasting ore deposit, could effectively realize the recovery of fine fraction and micro-size fraction magnetic mineral through magnetic flocculation-enhanced sorting.
Phosphorus ore containing is apatite or collophane in the sulphur of high phosphorus described in the present invention sparring raw ore, and sulfur mineral is pyrite or magnetic iron ore.
The class of xanthate described in the present invention collecting agent is a kind of in butyl xanthate, isoamyl xanthate, the isopropyl xanthate.
Foaming agent is a kind of in terpenic oil, No. 730 foaming agents, No. 2 oil, the commercially available phenols foaming agent among the present invention.
Fatty acid collecting agent described in the present invention is a kind of in oleic acid, oxidized paraffin wax soap, the tall oil.
The present invention has the following advantages and good effect:
1, adopted beneficiation method of the present invention, under low reagent consumption, realized that the major part of phosphorus sulphur removes, reduced the difficulty of reduction roasting ore deposit magnetic separation dephosphorization sulphur, this dephosphorization sulphur technology is to the assorted certain directive significance that has of falling of the similar iron ore of China.
2, strengthen the conversion of siderite magnetropism iron through adding the low sodium carbonate of measuring in the reducing roasting process, guarantee is provided for magnetic separation obtains high-recovery.
3, through fine grinding reduced ore-magnetic flocculation sorting, can not only improve concentrate iron grade, the while has strengthened the recovery of fine fraction and microfine magnetic mineral effectively and has realized the deep removal of roasted ore phosphorus sulphur.
4, this invention can obtain the iron ore concentrate of iron grade more than 65%; Iron recovery is more than 65%; The content of foreign matter of phosphor sulphur is National standard also, makes the high phosphorus-sulfur siderite resource of present dull difficult choosing be able to development and use, to alleviate the nervous situation of present domestic iron ore deposit supply and demand.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described in further detail, but protection domain of the present invention is not limited to said content.
Embodiment 1: the method for this high phosphorus-sulfur siderite resource recycling, and particular content is following:
Raw ore is an iron grade 30.76% in the present embodiment, and is phosphorous 1.05%, the siderite ore of sulfur-bearing 1.38%, and phosphorus exists with the form of collophane, and sulphur exists with pyritous form, and concrete operations are following:
1, the ore deposit weight percentage that 1 ton of raw ore is milled to-45 μ m grades accounts for 92%;
2, the ore grinding slurry pH to 7.5 of regulating step 1 gained, the butyl xanthate of adding 100 grams, the terpenic oil foaming agent of 60 grams carries out reverse flotation desulfurizing, collects the sulfur-bearing foam;
3, the underflow slurry pH to 10 of reverse flotation desulfurizing in the regulating step 2, the oleic collector of adding 150 gram/ton raw ores carries out reverse flotation and roughly selects dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 200 grams in the dephosphorization underflow ore pulp at reverse flotation, the oleic collector of 50 grams carries out reverse flotation and scans dephosphorization, collects phosphorous foam 2; In phosphorous foam 1, add the starch of 500 grams, the oleic collector of 50 grams carries out selected 1 dephosphorization; Reclaim iron mineral wherein, collect phosphorous foam 3, phosphorous foam 2 and 3 is mixed and adds the starch of 400 grams; The oleic collector of 200 gram/ton raw ores carries out selected 2 dephosphorizations, reclaims iron mineral wherein; To scan, selected 1 and selected 2 underflow filters and obtains filter residue and filtrating, and filtrating can be recycled;
4, the sodium carbonate of interpolation 5% in the filter residue of step 3 dephosphorization reverse flotation, 6% coal dust at 1000 ℃ of roasting temperature 120min, gets the reduction roasting ore deposit;
5, the weight percentage that the reduction roasting ore deposit is milled to-45 μ m grades is 87%, through a magnetic flocculation sorting, iron ore concentrate.The technical indicator of iron ore concentrate is: iron grade 68.45%, and phosphorous 0.13%, sulfur-bearing 0.28%, iron recovery 68%.
Embodiment 2: the method for this high phosphorus-sulfur siderite resource recycling, and particular content is following:
Raw ore is an iron grade 28.65% in the present embodiment, phosphorous 0.95 %, and the siderite ore of sulfur-bearing 1.30%, phosphorus exists with the form of apatite, and sulphur exists with pyritous form, and concrete operations are following:
1, the ore deposit weight percentage that 1 ton of raw ore is milled to-45 μ m grades accounts for 94%;
2, the ore grinding slurry pH to 8 of regulating step 1 gained, the isoamyl xanthate of adding 100 grams, the commercial code of 50 grams is 730 foaming agent, carries out reverse flotation desulfurizing, collects the sulfur-bearing foam;
3, the underflow slurry pH to 9 of reverse flotation desulfurizing in the regulating step 2, the oxidized paraffin wax soap collecting agent of adding 100 grams carries out reverse flotation and roughly selects dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 150 grams in the dephosphorization underflow ore pulp at reverse flotation, 50 gram oxidized paraffin wax soap collecting agents carry out reverse flotation and scan dephosphorization, collect phosphorous foam 2; In phosphorous foam 1, add the starch of 400 grams, the oxidized paraffin wax soap collecting agent of 50 grams carries out selected 1 dephosphorization; Reclaim iron mineral wherein, collect phosphorous foam 3, phosphorous foam 2 and 3 is mixed and adds the starch of 400 grams; The oxidized paraffin wax soap collecting agent of 200 grams carries out selected 2 dephosphorizations, reclaims iron mineral wherein; To scan, selected 1 and selected 2 underflow filters and obtains filter residue and filtrating, and filtrating can be recycled;
4, the sodium carbonate of interpolation 4% in the filter residue of step 3 dephosphorization reverse flotation, 10% coal dust is incubated 150min under 900 ℃ of temperature, get the reduction roasting ore deposit;
5, the weight percentage that the reduction roasting ore deposit is milled to-45 μ m grades is 89%, through a magnetic flocculation sorting, iron ore concentrate.The technical indicator of iron ore concentrate is: iron grade 69.45%, and phosphorous 0.11%, sulfur-bearing 0.29%, iron recovery 67%.
Embodiment 3: the method for this high phosphorus-sulfur siderite resource recycling, and particular content is following:
Raw ore is an iron grade 31.16% in the present embodiment, and is phosphorous 1.08%, the siderite ore of sulfur-bearing 1.25%, and phosphorus exists with the form of collophane, and sulphur exists with magnetic iron ore and pyritous form, and concrete operations are following:
1, the ore deposit weight percentage that 1 ton of raw ore is milled to-45 μ m grades accounts for 95%;
2, the ore grinding slurry pH to 9 of regulating step 1 gained, the isopropyl xanthate of adding 80 grams, No. 2 oily foaming agents of 50 grams carry out reverse flotation desulfurizing, collect the sulfur-bearing foam;
3, the underflow slurry pH to 11 of reverse flotation desulfurizing in the regulating step 2, the tall oil collecting agent of adding 150 gram/ton raw ores carries out reverse flotation and roughly selects dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 200 gram/ton raw ores in the dephosphorization underflow ore pulp at reverse flotation, the tall oil collecting agent of 40 grams carries out reverse flotation and scans dephosphorization, collects phosphorous foam 2; In phosphorous foam 1, add the starch of 400 grams, the tall oil collecting agent of 40 gram/ton raw ores carries out selected 1 dephosphorization; Reclaim iron mineral wherein, collect phosphorous foam 3, phosphorous foam 2 and 3 is mixed and adds the starch of 500 gram/ton raw ores; The tall oil collecting agent of 300 gram/ton raw ores carries out selected 2 dephosphorizations, reclaims iron mineral wherein; To scan, selected 1 and selected 2 underflow filters and obtains filter residue and filtrating, and filtrating can be recycled;
4, the sodium carbonate of interpolation 5% in the filter residue of step 3 dephosphorization reverse flotation, 10% coal dust is incubated 120min under 1100 ℃ of temperature, get the reduction roasting ore deposit;
5, the weight percentage that the reduction roasting ore deposit is milled to-45 μ m grades is 86%, through a magnetic flocculation sorting, iron ore concentrate.The technical indicator of iron ore concentrate: iron grade 70.45%, phosphorous 0.15%, sulfur-bearing 0.29%, iron recovery 68%.
Embodiment 4: the method for this high phosphorus-sulfur siderite resource recycling, and particular content is following:
Raw ore ferrous grade 29.16% in the present embodiment, phosphorous 1.02%, the siderite ore of sulfur-bearing 1.27%, phosphorus exists with the form of collophane, and sulphur exists with magnetic iron ore and pyritous form, and concrete operations are following:
1, the ore deposit weight percentage that 1 ton of raw ore is milled to-45 μ m grades accounts for 92%;
2, the ore grinding slurry pH to 7 of regulating step 1 gained, the isopropyl xanthate of adding 50 gram/ton raw ores, the commercially available phenols foaming agent of 100 gram/ton raw ores carries out reverse flotation desulfurizing, collects the sulfur-bearing foam;
3, the underflow slurry pH to 9 of reverse flotation desulfurizing in the regulating step 2, the tall oil collecting agent of adding 200 gram/ton raw ores carries out reverse flotation and roughly selects dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 100 gram/ton raw ores in the dephosphorization underflow ore pulp at reverse flotation, the tall oil collecting agent of 20 gram/ton raw ores carries out reverse flotation and scans dephosphorization, collects phosphorous foam 2; In phosphorous foam 1, add the starch of 200 gram/ton raw ores, the tall oil collecting agent of 20 gram/ton raw ores carries out selected 1 dephosphorization; Reclaim iron mineral wherein, collect phosphorous foam 3, phosphorous foam 2 and 3 is mixed and adds the starch of 200 gram/ton raw ores; The tall oil collecting agent of 100 gram/ton raw ores carries out selected 2 dephosphorizations, reclaims iron mineral wherein; To scan, selected 1 and selected 2 underflow filters and obtains filter residue and filtrating, and filtrating can be recycled;
4, the sodium carbonate of interpolation 2% in the filter residue of step 3 dephosphorization reverse flotation, 5% coal dust is incubated 90min under 1100 ℃ of temperature, get the reduction roasting ore deposit;
5, the weight percentage that the reduction roasting ore deposit is milled to-45 μ m grades is 88%, through a magnetic flocculation sorting, iron ore concentrate.The technical indicator of iron ore concentrate is: iron grade 69.95%, and phosphorous 0.12%, sulfur-bearing 0.24%, iron recovery 66%.
Claims (5)
1. the method for a high phosphorus-sulfur siderite resource recycling is characterized in that accomplishing according to the following steps:
(1) weight percentage that high phosphorus sulphur sparring raw ore is milled to-45 μ m grades is greater than 90%;
(2) ore grinding slurry pH to 7～9 of regulating step (1) gained, the xanthate class collecting agent of adding 50～100 gram/ton raw ores, the foaming agent of 50～100 gram/ton raw ores carries out reverse flotation desulfurizing, collects the sulfur-bearing foam;
(3) underflow slurry pH to 9～11 of reverse flotation desulfurizing in the regulating step (2), the fatty acid collecting agent of adding 100～200 gram/ton raw ores carries out reverse flotation and roughly selects dephosphorization, collects phosphorous foam 1; Roughly select the starch that adds 100～200 gram/ton raw ores in the dephosphorization underflow ore pulp at reverse flotation, the fatty acid collecting agent of 20～50 gram/ton raw ores carries out reverse flotation and scans dephosphorization; Collect phosphorous foam 2, in phosphorous foam 1, add the starch of 200～500 gram/ton raw ores, the fatty acid collecting agent of 20～50 gram/ton raw ores; Carry out selected 1 dephosphorization, reclaim iron mineral wherein, collect phosphorous foam 3; Phosphorous foam 2 and 3 is mixed and add the starch of 200～500 gram/ton raw ores, and the fatty acid collecting agent of 100～300 gram/ton raw ores carries out selected 2 dephosphorizations; Reclaim iron mineral wherein; To scan, selected 1 and selected 2 underflows filter and to obtain filter residue and filtrating, filtrate cycle is used;
(4) in the filter residue of step (3), add 2%～5% sodium carbonate, 5%～10% coal dust is incubated 90min～150min under 900～1100 ℃ of temperature, the reduction roasting ore deposit;
(5) weight percentage that the reduction roasting ore deposit is milled to-45 μ m grades is greater than 85%, through the magnetic flocculation sorting, iron ore concentrate.
2. the method for high phosphorus-sulfur siderite resource recycling according to claim 1 is characterized in that: the phosphorus ore thing that contains in the high phosphorus sulphur sparring raw ore is apatite or collophane, and sulfur mineral is pyrite or magnetic iron ore.
3. the method for high phosphorus-sulfur siderite resource recycling according to claim 1 is characterized in that: xanthate class collecting agent is a kind of in butyl xanthate, isoamyl xanthate, the isopropyl xanthate.
4. the method for high phosphorus-sulfur siderite resource recycling according to claim 1 is characterized in that: foaming agent is a kind of in terpenic oil, No. 730 foaming agents, No. 2 oil, the phenols foaming agent.
5. the method for high phosphorus-sulfur siderite resource recycling according to claim 1 is characterized in that: fatty acid collecting agent is a kind of in oleic acid, oxidized paraffin wax soap, the tall oil.
Priority Applications (1)
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102776358A (en) * | 2012-08-22 | 2012-11-14 | 邵金堤 | Dephosphorization agent, method for preparing same and application |
| CN104148175A (en) * | 2014-08-08 | 2014-11-19 | 西北矿冶研究院 | Mineral processing technology for processing mixed diamond and magnetic ore |
| CN105324497A (en) * | 2013-06-27 | 2016-02-10 | 株式会社神户制钢所 | Production method for low-sulfur iron ore |
| CN108273657A (en) * | 2018-03-12 | 2018-07-13 | 湖北省兴发磷化工研究院有限公司 | A kind of floating combined sorting method of rock phosphate in powder magnetic- |
| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
| CN111375484A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | Phosphate ore washing, classifying, roasting and flotation method |
| CN115228623A (en) * | 2022-07-22 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for simultaneously reducing P and Mn contents in ferrovanadium alloy |
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| CN1857783A (en) * | 2006-05-30 | 2006-11-08 | 长沙矿冶研究院 | Beneficiation method for weak magnetic iron ores such as siderite, limonite and siderite paragenetic ore |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776358A (en) * | 2012-08-22 | 2012-11-14 | 邵金堤 | Dephosphorization agent, method for preparing same and application |
| CN105324497A (en) * | 2013-06-27 | 2016-02-10 | 株式会社神户制钢所 | Production method for low-sulfur iron ore |
| CN105324497B (en) * | 2013-06-27 | 2017-05-31 | 株式会社神户制钢所 | The low manufacture method containing sulphur iron ore |
| CN104148175A (en) * | 2014-08-08 | 2014-11-19 | 西北矿冶研究院 | Mineral processing technology for processing mixed diamond and magnetic ore |
| CN108273657A (en) * | 2018-03-12 | 2018-07-13 | 湖北省兴发磷化工研究院有限公司 | A kind of floating combined sorting method of rock phosphate in powder magnetic- |
| CN108970799A (en) * | 2018-08-06 | 2018-12-11 | 中国恩菲工程技术有限公司 | The system for handling Ultra-low-grade magnetite |
| CN111375484A (en) * | 2018-12-29 | 2020-07-07 | 中蓝连海设计研究院有限公司 | Phosphate ore washing, classifying, roasting and flotation method |
| CN115228623A (en) * | 2022-07-22 | 2022-10-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for simultaneously reducing P and Mn contents in ferrovanadium alloy |
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