CN109180277A - A method of Si, Ca, Mg, K fertilizer is produced using rotary kiln calcining serpentine - Google Patents
A method of Si, Ca, Mg, K fertilizer is produced using rotary kiln calcining serpentine Download PDFInfo
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- CN109180277A CN109180277A CN201811360575.9A CN201811360575A CN109180277A CN 109180277 A CN109180277 A CN 109180277A CN 201811360575 A CN201811360575 A CN 201811360575A CN 109180277 A CN109180277 A CN 109180277A
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- Prior art keywords
- raw material
- serpentine
- fertilizer
- rotary kiln
- cao
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- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 title claims abstract description 42
- 239000003337 fertilizer Substances 0.000 title claims abstract description 29
- 229910052749 magnesium Inorganic materials 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 229910052700 potassium Inorganic materials 0.000 title claims abstract description 17
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 17
- 238000001354 calcination Methods 0.000 title claims abstract description 16
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 25
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000001103 potassium chloride Substances 0.000 claims abstract description 13
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 13
- 235000019738 Limestone Nutrition 0.000 claims abstract description 11
- 239000006028 limestone Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 238000007599 discharging Methods 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims abstract description 8
- 239000000696 magnetic material Substances 0.000 claims abstract description 6
- 239000004568 cement Substances 0.000 claims abstract description 5
- 238000000227 grinding Methods 0.000 claims abstract description 5
- 230000005291 magnetic effect Effects 0.000 claims abstract description 5
- 238000007885 magnetic separation Methods 0.000 claims abstract description 5
- 239000010439 graphite Substances 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 4
- 239000010440 gypsum Substances 0.000 claims abstract description 4
- 238000005453 pelletization Methods 0.000 claims abstract description 4
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims abstract description 4
- 229910052939 potassium sulfate Inorganic materials 0.000 claims abstract description 4
- 235000011151 potassium sulphates Nutrition 0.000 claims abstract description 4
- 239000011651 chromium Substances 0.000 claims description 7
- 229910052793 cadmium Inorganic materials 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 4
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 4
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052753 mercury Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims description 3
- 229910052602 gypsum Inorganic materials 0.000 claims description 2
- 230000005389 magnetism Effects 0.000 claims description 2
- 238000006477 desulfuration reaction Methods 0.000 claims 1
- 230000023556 desulfurization Effects 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 23
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 18
- 239000011777 magnesium Substances 0.000 description 16
- 239000000292 calcium oxide Substances 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 13
- 239000000377 silicon dioxide Substances 0.000 description 12
- 239000011575 calcium Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 229910052681 coesite Inorganic materials 0.000 description 10
- 229910052906 cristobalite Inorganic materials 0.000 description 10
- 229910052682 stishovite Inorganic materials 0.000 description 10
- 229910052905 tridymite Inorganic materials 0.000 description 10
- 239000000395 magnesium oxide Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 239000004575 stone Substances 0.000 description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 241000270295 Serpentes Species 0.000 description 2
- 238000000498 ball milling Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000002686 phosphate fertilizer Substances 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 235000016068 Berberis vulgaris Nutrition 0.000 description 1
- 241000335053 Beta vulgaris Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 244000132059 Carica parviflora Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 240000000111 Saccharum officinarum Species 0.000 description 1
- 235000007201 Saccharum officinarum Nutrition 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 235000002595 Solanum tuberosum Nutrition 0.000 description 1
- 244000061456 Solanum tuberosum Species 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- DLHONNLASJQAHX-UHFFFAOYSA-N aluminum;potassium;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Si+4].[Si+4].[Si+4].[K+] DLHONNLASJQAHX-UHFFFAOYSA-N 0.000 description 1
- 229910052898 antigorite Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- KMQAPZBMEMMKSS-UHFFFAOYSA-K calcium;magnesium;phosphate Chemical compound [Mg+2].[Ca+2].[O-]P([O-])([O-])=O KMQAPZBMEMMKSS-UHFFFAOYSA-K 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 229910052909 inorganic silicate Inorganic materials 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 229910052899 lizardite Inorganic materials 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- NOTVAPJNGZMVSD-UHFFFAOYSA-N potassium monoxide Inorganic materials [K]O[K] NOTVAPJNGZMVSD-UHFFFAOYSA-N 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- IBPRKWGSNXMCOI-UHFFFAOYSA-N trimagnesium;disilicate;hydrate Chemical compound O.[Mg+2].[Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IBPRKWGSNXMCOI-UHFFFAOYSA-N 0.000 description 1
- 239000010455 vermiculite Substances 0.000 description 1
- 229910052902 vermiculite Inorganic materials 0.000 description 1
- 235000019354 vermiculite Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/02—Manufacture from potassium chloride or sulfate or double or mixed salts thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/06—Ferric oxide [Fe2O3]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G49/00—Compounds of iron
- C01G49/02—Oxides; Hydroxides
- C01G49/08—Ferroso-ferric oxide [Fe3O4]
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G51/00—Compounds of cobalt
- C01G51/04—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G53/00—Compounds of nickel
- C01G53/04—Oxides; Hydroxides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of methods using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer, include the following steps: 1, roping serpentine, lime stone, potassium chloride raw material to cement producing line；2, prepare it is carbon containing be greater than 80% graphite it is stand-by to the production line；3, by above raw material according to the ratio of mass percent: serpentine: lime stone: potassium chloride: graphitic carbon=63%:28%:6%:3% ratio is added to rotary kiln, calcines in 850~1200 DEG C of temperature ranges, temperature of charge, which reaches 900 DEG C or more, to discharge；4, the material after discharging is milled down to 140 mesh in clinker grinding mill, by magnetic belt separator magnetic separation after discharging, magneticly elects and does not have magnetic material to use as the powder raw material of Si, Ca, Mg, K fertilizer；5, more than chemical examination powder raw material, detects CaO, SiO therein2、K2O, the content of MgO；6, after detecting, CaO insufficient section is supplied, K with desulfurized gypsum2O is insufficient, is supplied by potassium sulfate, and then in pelletizing production line, production becomes pelletized product.
Description
Technical field
The present invention relates to a kind of methods using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer.
Background technique
The production of minerals fertilizer, most of techniques using calcining.The common raw material of production secondary nutrients has stone
Diamond stone, lime stone, dolomite, medical stone, potassium feldspar, vermiculite, oyster shell, coral rock etc..These raw material are substantially to be rich in
CaO、SiO2、MgO、K2O etc., the technique of calcining are usually carried out in rotary kiln or shaft furnace.The production of Si, Ca, Mg, K fertilizer is also to use to forge
Burning and grinding, the process of granulation.
Searching document discloses: (1), Zhu of HeFei University of Technology announces on there are " stone material " magazine of the 12nd phase in 2000
Entitled " the material composition feature of serpentine and utilization " paper among, have that " serpentine is to insensitive, the hot stability of heat
It is good.For the stability of heat, antigorite is higher than lizardite, sharp choysotile.The thermal conductivity of choysotile is no more than
0.23w/ m。
K is good heat-resistant insulation material.The water absorption rate of serpentine is little.This is because serpentine minerals structural unit
Interlayer does not adsorb the reason of water.But since the partial size of serpentine is very tiny, or in threadiness, can be inhaled between shred and fiber
Attached a small amount of water.Serpentine can do refractory material." content statement；(2) Fu Jiangang, Wang Hui et al. are in 2007 " hydrometallurgys "
Among the paper for publishing entitled " development and utilization situation and development trend of serpentine ore " on magazine, there is following content statement:
" water soluble phosphorous fertilizer can be manufactured with snake masonry ingredient, the corporate boss using serpentine production calcium magnesium phosphate domestic at present will have
Guangxi phosphate fertilizer plant, YUNLAN Phosphor Fertilizer Plant, Donghai Area, Jiangsu phosphate fertilizer plant etc..Its production technology uses smelting process ".
According to above statement it is found that there is presently no the techniques using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer.
Furthermore as the sylvite base of Largest In China, Lop Nur sylvite can be used as Fertilizer application, but potassium chloride composite fertilizer contains chlorine
Height is not applied for the fear-chlorion crops such as tobacco, sugarcane, potato, tealeaves, beet.
Inventor's discovery when studying Ruoqiang county according to the snake stone structure for gulping down the town Bu Lake, serpentine centre are contained
The various heavies such as Cr, Pb, Cd, Fe, Co, Mn, Ni, Mo.Wherein the content of Cr has been more than national chemical fertilizer GB/T 23349-2009
" arsenic, cadmium, lead, chromium, mercury ecological index in fertilizer " removes so needing certain technique about using serpentine production fertilizer
The ingredient of Cr among serpentine, can meet the use standard of fertilizer, and Xinjiang among the serpentine for gulping down the area Bu Lake according to having
The comparison of the ingredient situation and national standard of evil element is as shown in the table:
Summary of the invention
The purpose of the present invention is to provide a kind of method using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer, foundations
The characteristics of mineralization machanism and mineral tissue of serpentine, using metallurgical transmission theory, in conjunction with heavy metallic oxide reduction reaction
Free energy numerical value produces minerals fertilizer by rotary kiln using the method with addition of amount of activated material and reproducibility material,
Applied to Agriculture, forestry And Animal Husbandry industry.
The object of the present invention is achieved like this, a kind of side using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer
Method includes the following steps: 1, roping serpentine, lime stone, potassium chloride raw material to cement producing line, wherein the CaO in lime stone
Mass percentage content is at least 50%；2, prepare it is carbon containing be greater than 80% graphite it is stand-by to the production line；It 3, will be above
Raw material according to mass percent ratio: serpentine: lime stone: potassium chloride: graphitic carbon=63%:28%:6%:3% ratio be added
To rotary kiln, calcined in 850~1200 DEG C of temperature ranges, temperature of charge, which reaches 900 DEG C or more, to discharge；4, after discharging
Material is milled down to 140 mesh in clinker grinding mill, and by magnetic belt separator magnetic separation after discharging, it is former as metallurgy to magneticly elect magnetic material
Material utilizes, and does not have magnetic material to use as the powder raw material of Si, Ca, Mg, K fertilizer；5, more than chemical examination powder raw material, detects it
In CaO, SiO2、K2O, the content of MgO and chromium therein, cadmium, arsenic, lead, mercury；6, after above detection, CaO is insufficient
Part is supplied with desulfurized gypsum, K2O is insufficient, is supplied by potassium sulfate, and then in pelletizing production line, production becomes pelletized product
?；7, the dedusting ash of rotary kiln is sold to Lead And Zinc Smelter as lead-zinc smelting raw material.
Technical principle of the invention:
1, it is dehydrated using calcining serpentine, generates free SiO2, promote among the component of serpentine, free silica to
The conversion of fertilizer efficiency component, weak magnetic iron hydroxide is to ferromagnetic substance Fe among serpentine3O4The equation of conversion, reaction is as follows:
Mg6[Si4O10](OH)8+Q→3Mg2[SiO4]+SiO2+4H2O(calcined dehydration promotes SiO2Crystal is converted to tetrahedron)
2Fe(OH)3+Q=Fe2O3+3H2O (dehydration of the oxide of iron)
Fe2O3+FeO=Fe3O4(magnetization of di-iron trioxide is reacted)
2, since serpentine thermal conductivity is very poor, dewatered forsterite is a kind of refractory material, and KCl6%, Diversity is added
For the eutectic temperature of object at 1250 DEG C, promoting serpentine that local sintering state is presented in calcination temperature section (is not in big face
Product melting zone), prevent mixture from gluing kiln, while convenient for the broken processing after mixture kiln discharge, recycling valuable among serpentine
Metal.
Mg6[Si4O10](OH)8+8KCl+Q→6MgO·SiO2+3SiO2+4K2O+8HCl (dechlorination reaction of potassium chloride)
3, the decomposition reaction of calcium carbonate, the CO of generation2It can be reacted with graphitic carbon, the reducibility gas CO of generation, promote calcining
Oxide in the process is converted to metallic state or lower valency, and calcium oxide and magnesia, silicon dioxde reaction generate low melting point
Monticellite is conducive to the magnesia and silica crystal structure among serpentine while promoting serpentine to reduce fusing point
Conversion, the formation of fertiliser containing magnesium element oxide magnesium completes in this stage, and reaction equation is as follows:
CaCO3+Q=CaO+CO2
CaO+2MgO·SiO2=CaO·MgO·SiO2+ MgO (generation of low melting point and the generation of free magnesium)
4, be added reducing agent C reduction PbO, be allowed to the separation among raw ore object tissue, into dedusting ash, dedusting ash is as lead zinc
Raw materials for metallurgy is sold to Lead And Zinc Smelter.
PbO(l)+C=Pb(g) + CO(g)
ΔG0= 252700-247.92T
It is 746 DEG C from reaction starting temperature known to above formula.
PbO(l)+CO=Pb(g)+CO2(g)
ΔG0=86150-76.92T
It is calculated by above formula and knows that reaction starting temperature is 847 DEG C.
5, calcined mixture carries out ball-milling treatment to 140 mesh, and mixture is low under the action of mechano-chemical reation
Melting Substance will be converted to free state substance, further discharge the fertilizer efficiency of sintered state mixture moderate-element, the side of reaction
Formula is as follows:
CaO·MgO·SiO2→CaO+MgO+SiO2
6, sintered state mixture is being milled down to 140 mesh, and chromium oxide therein, nickel oxide, cobalt oxide, iron oxide etc. have magnetism,
After ball mill discharging, it can be recycled by magnetic separation, the valuable metal oxide as high value by magnetic separator.Its
Remaining mixture is the primary raw material of Si, Ca, Mg, K fertilizer.
Innovative point of the invention:
1. among serpentine, potassium chloride 6% is added, for reducing fusing point of the serpentine in calcination process, Si, Ca, Mg, K fertilizer is supplemented
Potassium element.
2. addition reducing agent carbon and calcium carbonate, the chemical reaction of generation can make the oxidation among serpentine among serpentine
Lead is able to enter among dedusting ash, is recycled.
3. the mixture ball milling of sintered state to 140 mesh, is the wear phases such as CrO, FeO, CdO, NiO, CoO and silicate, partially
The best critical value that silicate, monticellite mutually dissociate.
Embodiment: embodiment is according to the serpentine resource and cement rotary kiln production line for gulping down Bu Lake with Ruoqiang county
Example.
A method of Si, Ca, Mg, K fertilizer being produced using rotary kiln calcining serpentine, is included the following steps:
1, roping serpentine, lime stone (CaO > 50%), potassium chloride raw material to cement producing line；
2, prepare it is carbon containing be greater than 80% graphite it is stand-by to production line；
3, by above raw material according to the ratio of mass percent: serpentine: lime stone: potassium chloride: graphitic carbon=63%:28%:
The ratio of 6%:3% is added to rotary kiln, calcines in 850~1200 DEG C of ranges, temperature of charge, which reaches 900 DEG C or more, to be gone out
Material；
4, the material after discharging is milled down to 140 mesh in clinker grinding mill, by magnetic belt separator magnetic separation after discharging, magneticly elects magnetic
Material is utilized as metallurgical raw material, does not have magnetic material to use as the powder raw material of Si, Ca, Mg, K fertilizer.
5, more than chemical examination powder raw material, detects CaO, SiO therein2、K2O, MgO and chromium therein, cadmium, arsenic, lead,
The content of mercury.
6, after above detection, CaO insufficient section is supplied, K with desulfurized gypsum2O is insufficient, is supplied by potassium sulfate,
Then in pelletizing production line, production becomes pelletized product.
7, the dedusting ash of rotary kiln is sold to Lead And Zinc Smelter as lead-zinc smelting raw material.
Claims (1)
1. a kind of method using rotary kiln calcining serpentine production Si, Ca, Mg, K fertilizer, characterized by the following steps: 1,
Roping serpentine, lime stone, potassium chloride raw material to cement producing line, wherein the CaO mass percentage content in lime stone is at least
It is 50%；2, prepare it is carbon containing be greater than 80% graphite it is stand-by to the production line；3, by above raw material according to mass percent
Ratio: serpentine: lime stone: potassium chloride: graphitic carbon=63%:28%:6%:3% ratio is added to rotary kiln, 850~
1200 DEG C of temperature range calcining, temperature of charge, which reaches 900 DEG C or more, to discharge；4, the material after discharging is levigate in clinker grinding mill
To 140 mesh, by magnetic belt separator magnetic separation after discharging, magneticly elects magnetic material and utilized as metallurgical raw material, without magnetism
Material used as the powder raw material of Si, Ca, Mg, K fertilizer；5, more than chemical examination powder raw material, detects CaO, SiO therein2、
K2O, the content of MgO and chromium therein, cadmium, arsenic, lead, mercury；6, after above detection, CaO insufficient section uses desulfurization
Gypsum is supplied, K2O is insufficient, is supplied by potassium sulfate, and then in pelletizing production line, production becomes pelletized product；7, it rotates
The dedusting ash of kiln is sold to Lead And Zinc Smelter as lead-zinc smelting raw material.
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| CN1785917A (en) * | 2005-12-08 | 2006-06-14 | 李书礼 | Potassium magnesium fertilizer and its preparation method |
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| CN1785917A (en) * | 2005-12-08 | 2006-06-14 | 李书礼 | Potassium magnesium fertilizer and its preparation method |
| CN1982260A (en) * | 2005-12-12 | 2007-06-20 | 米清海 | Slow-effect/release-controllable silica-potassic-magnesium fertilizer |
| KR20140055369A (en) * | 2012-10-31 | 2014-05-09 | 김영욱 | A plants nutrient solution process utilization of rice bran and mineral powder |
| CN103540768A (en) * | 2013-10-18 | 2014-01-29 | 左晓娟 | Integrated serpentine nickel element smelting process |
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