CN108246470B - Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material - Google Patents
Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material Download PDFInfo
- Publication number
- CN108246470B CN108246470B CN201810092603.7A CN201810092603A CN108246470B CN 108246470 B CN108246470 B CN 108246470B CN 201810092603 A CN201810092603 A CN 201810092603A CN 108246470 B CN108246470 B CN 108246470B
- Authority
- CN
- China
- Prior art keywords
- kaolin
- drying
- whiteness
- mud
- complex
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 title claims abstract description 201
- 235000012211 aluminium silicate Nutrition 0.000 title claims abstract description 199
- 239000005995 Aluminium silicate Substances 0.000 title claims abstract description 198
- 239000000843 powder Substances 0.000 title claims abstract description 79
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims abstract description 57
- 239000011707 mineral Substances 0.000 title claims abstract description 57
- 239000002994 raw material Substances 0.000 title claims abstract description 40
- 239000012141 concentrate Substances 0.000 title claims description 39
- 238000000926 separation method Methods 0.000 title claims description 4
- 238000000034 method Methods 0.000 claims abstract description 39
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000012216 screening Methods 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052901 montmorillonite Inorganic materials 0.000 claims abstract description 10
- 239000010453 quartz Substances 0.000 claims abstract description 10
- 239000010433 feldspar Substances 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 8
- 238000007885 magnetic separation Methods 0.000 claims abstract description 8
- 229910052634 enstatite Inorganic materials 0.000 claims abstract description 7
- BBCCCLINBSELLX-UHFFFAOYSA-N magnesium;dihydroxy(oxo)silane Chemical compound [Mg+2].O[Si](O)=O BBCCCLINBSELLX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims description 80
- 239000004927 clay Substances 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 37
- 238000001125 extrusion Methods 0.000 claims description 26
- 230000008569 process Effects 0.000 claims description 20
- 238000001354 calcination Methods 0.000 claims description 15
- 238000003825 pressing Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 9
- 239000002002 slurry Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 239000011859 microparticle Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 2
- 238000005469 granulation Methods 0.000 claims 1
- 230000003179 granulation Effects 0.000 claims 1
- 239000002311 kaolinite-group mineral Substances 0.000 abstract description 7
- 238000000465 moulding Methods 0.000 abstract description 4
- 229910052622 kaolinite Inorganic materials 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 12
- 235000012239 silicon dioxide Nutrition 0.000 description 9
- 239000012065 filter cake Substances 0.000 description 6
- 238000001514 detection method Methods 0.000 description 5
- 239000002734 clay mineral Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 230000002087 whitening effect Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- -1 hydromica Chemical compound 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011085 pressure filtration Methods 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 1
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000012620 biological material Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910001919 chlorite Inorganic materials 0.000 description 1
- 229910052619 chlorite group Inorganic materials 0.000 description 1
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052621 halloysite Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011019 hematite Substances 0.000 description 1
- 229910052595 hematite Inorganic materials 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052900 illite Inorganic materials 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- VGIBGUSAECPPNB-UHFFFAOYSA-L nonaaluminum;magnesium;tripotassium;1,3-dioxido-2,4,5-trioxa-1,3-disilabicyclo[1.1.1]pentane;iron(2+);oxygen(2-);fluoride;hydroxide Chemical compound [OH-].[O-2].[O-2].[O-2].[O-2].[O-2].[F-].[Mg+2].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[K+].[K+].[K+].[Fe+2].O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2.O1[Si]2([O-])O[Si]1([O-])O2 VGIBGUSAECPPNB-UHFFFAOYSA-L 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 229910021646 siderite Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005550 wet granulation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a mineral processing method for preparing high-whiteness refined mineral powder from a complex kaolin ore raw material, which takes the complex kaolin ore or kaolinite as a raw material, the complex kaolin ore raw material is one or more than one of kaolinite group minerals, enstatite, montmorillonite and quartz, feldspar, hydromica and iron-containing mineral ores, the kaolin refined mineral powder is prepared by crushing, impurity removal, ore grinding, water washing, screening and magnetic separation, and the high-whiteness refined kaolin mineral powder is prepared by adopting various working procedures such as molding and the like.
Description
The technical field is as follows: the invention relates to a method for preparing concentrate powder from kaolin ore raw materials, in particular to a beneficiation method for preparing high-whiteness concentrate powder from complex kaolin ore raw materials.
Background art:
the kaolin mineral belongs to the layered silicate, and the crystal mainly comprises silicon-oxygen tetrahedron and Shaoxing-hydrogen octahedron;
kaolins in nature comprise minerals that are largely divided into clay minerals and non-clay minerals. Wherein the clay mineral mainly comprises kaolinite group minerals and small amount of montmorillonite, mica and chlorite; non-clay minerals mainly comprise hydrates of feldspar and quartz, and some contain iron minerals such as hematite, siderite, limonite, etc. The high-quality kaolin is in a white, fine and soft soil shape and has good physical and chemical properties such as plasticity, fire resistance and the like. The mineral components of the mineral composition mainly comprise kaolinite, halloysite, hydromica, illite, montmorillonite, quartz, feldspar and other minerals. Kaolin has wide application, is mainly used for paper making, ceramics and refractory materials, as well as raw materials of coating, rubber filler, enamel glaze and white cement, is used for a small amount of calcined whiteness of industrial departments such as plastics, paint, pigment, grinding wheel, pencil, daily cosmetics, soap, pesticide, medicine, textile, petroleum, chemical industry, building materials, national defense and the like, and is more important, and the higher the calcined whiteness is, the better the quality is; the whiteness can be measured by a whiteness meter.
The raw ore of the kaolin ore for ceramics is evolved after depositing for billions of years in an ore area, the metal elements contained in the raw ore change along with factors such as temperature, rainwater, scouring and weathering, and the high-quality kaolin raw material needs to be purified by processes such as drying, screening and calcining to remove impurities in the ore, so that the aim of producing high-quality kaolin mineral powder is fulfilled. The existing method generally comprises the steps of grinding raw ores into powder to prepare blanks, pressing bricks, airing, firing in a kiln, wherein the firing temperature is between 1200 ℃ and 1350 ℃, the kiln needs to circularly supply air, the combustion time is long, and iron molecules can be adhered to talc ore powder products due to a sulfuration reaction after firing, so that the whiteness of kaolin ore powder finished products can be reduced, the products can be sent to downstream manufacturers, and the whiteness of products produced by the downstream manufacturers can be reduced in different degrees. The product quality is also greatly influenced.
However, the whitened kaolin concentrate powder produced and prepared by the existing kaolin ore raw material and process has the advantages that firstly, the raw material source is narrow, the raw material source is single, so that the purchasing cost of the raw material kaolin concentrate is greatly increased, and the production cost for preparing the high-whiteness concentrate powder by taking kaolin or kaolin ore as the raw material is correspondingly increased; secondly, at present, no complex kaolin ore is used as a raw material, and the complex talc ore raw material refers to the mixture of more than one ore or a plurality of ore of mineral ores such as enstatite, montmorillonite, quartz, feldspar and the like to prepare high-whiteness concentrate powder. Because the raw material sources are complex and the components are uncertain, the existing process method is difficult to prepare the high-whiteness concentrate powder or the kaolin high-whiteness concentrate powder. Therefore, how to prepare high-whiteness concentrate powder or high-whiteness concentrate powder called kaolin by using the existing complex kaolin ore resources is to effectively utilize the resources and meet the requirements of changing waste into valuable and circularly developing; namely the selected high-quality high-whiteness kaolin concentrate powder product.
The invention content is as follows: the invention aims to overcome the defects of the prior art and provides a beneficiation method for preparing high-whiteness concentrate powder from a complex kaolin ore raw material. The high-whiteness kaolin fine ore is prepared by taking complex kaolin or kaolin ore as a raw material through multiple processes of crushing, impurity removal, ore grinding, washing, screening, magnetic separation, molding and the like.
The invention discloses a mineral processing method for preparing high-whiteness refined mineral powder from a complex kaolin ore raw material, which takes the complex kaolin ore or kaolinite as a raw material, the complex kaolin ore raw material is one or more than one of kaolinite group minerals, enstatite, montmorillonite and quartz, feldspar, hydromica and iron-containing mineral ores, and the kaolin refined mineral powder is prepared by crushing, impurity removal, ore grinding, water washing, screening and magnetic separation, and the method also comprises the following steps:
1) a forming process, namely stirring and mixing kaolin concentrate powder and water to prepare kaolin concentrate powder slurry, carrying out filter pressing on the kaolin concentrate powder slurry by using a filter pressing device to prepare kaolin mud cakes, carrying out pugging treatment on the kaolin mud cakes in a pugging device by using a conveying device to obtain kaolin pugging, and carrying out extrusion treatment on the kaolin pugging mud cakes by using an extrusion forming device to prepare kaolin mud strips;
2) drying, namely uniformly distributing the kaolin mud strip materials on a drying mesh belt in a drying device through a material distribution device, and controlling the kaolin mud strips to be in contact drying with hot dry air in the drying device in a gradient manner in a countercurrent gradient manner to obtain dry kaolin mud strips;
3) a screening process, namely screening the dried kaolin clay strips obtained in the step 2) by using a screening device to remove micro-particle materials to prepare screened dried kaolin clay materials; calcining the screened and dried kaolin mud at high temperature, then putting the calcined kaolin mud into a cooling device, cooling, then crushing, screening and packaging to obtain the high-whiteness concentrate powder.
The ore dressing method for preparing high-whiteness refined mineral powder from complex kaolin ore raw materials is characterized in that 1) the forming process comprises the steps of conveying a kaolin mud cake prepared by filter pressing to a vacuum pug mill through a constant feeder, mixing to obtain kaolin powder pug, and then placing the kaolin powder pug into a vacuum pug mill of an extrusion forming device to be extruded and granulated to obtain kaolin mud strips.
Preferably, the extrusion forming device in the forming process 1) is a QZ L50 type vacuum extrusion forming machine for extrusion forming, and the power of the vacuum extrusion forming machine is controlled to be 40-80 kw.
Preferably, the method comprises the step 2) of drying, wherein the distributing device is a swinging belt distributor, and the drying mesh belt is divided into one to five layers according to upper and lower gradient levels; and controlling the kaolin clay strip materials to be continuously turned over when being conveyed and dried on one to five layers of drying mesh belts, and drying the kaolin clay strip materials by heated drying air to obtain the dry kaolin clay strips.
The water content of the prepared kaolin mud cake is controlled to be 20-30 Wt%; the diameter phi of the kaolin mud strip is controlled to be 18-20 mm.
More preferably, in the 2) drying procedure, the inlet air temperature of the hot drying air in the drying device is controlled to be more than or equal to 300 ℃, and the outlet air temperature after drying is less than or equal to 100 ℃; the drying time is controlled to be 40-55 minutes.
More preferably, the 2) drying procedure is to control the width of the drying mesh belt to be 1.5-1.8m and the laminated thickness of kaolin mud strips which are arranged on the drying mesh belt and used for drying the material to be dried to be less than or equal to 50 mm.
It is further preferable that the water content of the dried kaolin clay strip is controlled to be less than or equal to 5 Wt%.
The invention relates to a mineral separation method for preparing high-whiteness concentrate powder from a complex kaolin ore raw material, which comprises the following production and preparation process flows: the complex kaolin ore raw material is processed by the procedures of crushing, grinding, removing impurities, washing, pulping, magnetic separation and the like to prepare kaolin ore concentrate powder → molding → drying → screening, calcining → concentrating to be kaolin ore slurry → filter pressing → filter cake, homogenizing and adjusting water content → crushing the filter cake → extruding and molding → mesh bag or mesh belt drying → screening, crushing powder → calcining → cooling to prepare high-whiteness kaolin ore concentrate powder, and the product is obtained by packaging.
The process is as follows: the crushed powder obtained by screening after mesh bag drying or mesh belt drying is returned to the filter cake and further homogenized and reused in the procedure of homogenizing and adjusting water, and simultaneously, water and water vapor generated after filter pressing and mesh belt drying are recycled and reused together, so that circular economy, environmental protection and reproduction and utilization are realized.
The invention relates to a mineral processing method for preparing high-whiteness refined mineral powder, which is characterized in that the complex kaolin ore raw materials are one or more of kaolinite group minerals, enstatite, montmorillonite, quartz, feldspar, hydromica and iron-containing mineral ores, mineral processing, crushing, impurity removal, grinding, washing, screening and magnetic separation are adopted to prepare the kaolin refined mineral powder, then the kaolin refined mineral powder is subjected to a calcination process, and a biomass whitening agent is added in the calcination process. The kaolin mineral powder is whitened by calcination, and the whitening effect is 3-5 degrees compared with the whiteness of the raw ore.
On the other hand, in the method, the water content of the filter cake after filter pressing is controlled to be 20-30% in the forming stage, so that the wet granulation of the filter cake is easier, and a vacuumizing extrusion forming device and a process are adopted, so that the formed clay strips are low in porosity, high in strength and high in fault tolerance rate of formed water control, and the time for subsequent calcination is favorably shortened, so that the compactness of the clay strips is greatly improved, and the quality of high-whiteness kaolin mineral powder is improved. Secondly, the static multi-layer mesh bag type drying is used, so that the damage rate of the dried product in the drying procedure is low, and the drying efficiency is high.
The following is a report of the detection of the high-whiteness kaolin ore powder or kaolin high-whiteness concentrate powder product prepared by the method for preparing the high-whiteness kaolin ore powder from the complex kaolin ore raw material, and table 1
The sample name, calcined high-whiteness kaolin mineral powder or kaolin mineral high-whiteness concentrate powder,
the experimental environment, at 25 ℃,
the sample items, the routine analysis,
the detection basis is GB/T2578-2002,
a detection instrument, a GKF-Y6400A whiteness instrument,
TABLE 1
| Detecting items | Calcination according to the invention, element content (%) |
| Silicon dioxide | 52.02 |
| Aluminum oxide | 3.23 |
| Ferric oxide | 0.96 |
| Titanium dioxide | 0.07 |
| Calcium oxide | 0.6 |
| Magnesium oxide | 20.53 |
| Potassium oxide | 0.14 |
| Sodium oxide | 0.14 |
| Loss on ignition | 0.6 |
| Degree of whiteness on burning | 55.1 |
| Firing temperature | 1100 |
| Shrinkage rate | 3.5 |
Description of the drawings: from the data disclosed in the test of table 1 above, it can be seen that the whiteness of the high-whiteness kaolin mineral powder product produced by the method of the invention is increased by 5.2, and the shrinkage rate is also high.
The specific implementation mode is as follows: the present invention will be described in further detail with reference to specific embodiments.
The following examples will help to further understand the present invention, but do not limit the content of the present invention. In the examples, unless otherwise specified, all the remaining parts are referred to as mass or mass ratio. The high-whiteness kaolin mineral powder and the high-whiteness kaolin powder have the same meaning in the specification of the invention; the mud strips and the kaolin mud strips and the mud cakes and the kaolin mud cakes have the same meanings, and the mesh bag drying and the mesh belt drying have the same meanings; the high-whiteness concentrate powder in the invention is high-whiteness kaolin concentrate powder or kaolin high-whiteness concentrate powder.
The invention discloses a method for preparing high-whiteness kaolin concentrate powder from a complex kaolin ore raw material, which takes a complex kaolin ore as a raw material, the complex kaolin ore raw material is one or more than one of kaolinite group minerals, enstatite, montmorillonite and quartz, feldspar, hydromica and iron-containing mineral ores, and the kaolin concentrate powder is prepared by crushing, impurity removal, ore grinding, water washing, screening and magnetic separation, and is characterized by further comprising the following steps:
1) the method comprises the following steps of stirring and mixing kaolin concentrate powder and water to prepare kaolin concentrate powder slurry, carrying out pressure filtration on the kaolin concentrate powder slurry by using a pressure filtration device to prepare kaolin mud cakes, carrying out pugging treatment on the kaolin mud cakes in a pugging device by using a conveying device to obtain kaolin pugging, carrying out extrusion molding by using an extrusion molding device, namely a QZ L50 type vacuum extrusion molding machine, controlling the power of the vacuum extrusion molding machine to be 40-80kw, preparing the kaolin mud strips, controlling the length of the kaolin mud strips to be 20-30mm, controlling the water content of the prepared kaolin mud cakes to be 20-30Wt%, and controlling the diameter phi of the kaolin mud strips to be 18-20 mm.
2) Drying, namely uniformly distributing the kaolin mud strip materials on a drying mesh belt in a drying device through a material distribution device, and controlling the kaolin mud strips to be in contact drying with hot dry air in the drying device in a gradient manner in a countercurrent gradient manner to obtain dry kaolin mud strips; the distributing device is a swinging belt distributing device, and the drying mesh belt is divided into one to five layers according to upper and lower gradient levels; and controlling the kaolin clay strip materials to be continuously turned over when being conveyed and dried on one to five layers of drying mesh belts, and drying the kaolin clay strip materials by heated drying air to obtain the dry kaolin clay strips. Controlling the inlet air temperature of the hot drying air in the drying device to be more than or equal to 300 ℃, and the outlet air temperature after drying to be less than or equal to 100 ℃; controlling the drying time to be 40-55 minutes; the width of the drying mesh belt is controlled to be 1.5-1.8m, and the laminated thickness of kaolin clay strips which are arranged on the drying mesh belt and used for drying materials is controlled to be less than or equal to 50 mm.
3) A screening process, namely screening the dried kaolin clay strips obtained in the step 2) by using a screening device to remove micro-particle materials to prepare screened dried kaolin clay materials; and calcining the screened and dried kaolin pug at a high temperature, then putting the calcined kaolin pug into a cooling device, cooling, then crushing, screening and packaging to obtain the high-whiteness kaolin mineral powder. The prepared kaolin high-whiteness concentrate powder. The detection is carried out by a blue light whiteness meter after cooling.
Example 1
The complex kaolin ore raw material used in the embodiment of the invention is preliminarily detected to obtain the detection values of the main element components, namely the values of the raw ore are shown in a table 2:
| each element | Whiteness (original mineral powder) | Al | Si | Fe | Mg | Ca | K | Na | Ti |
| 50.3 | 3.46 | 52.47 | 1.19 | 20.69 | 0.8 | 0.16 | 0.18 | 0.09 |
Description of the drawings: the values measured in table 2 above are the values measured for each of the main metal elements in the complex kaolin ore raw material. The prepared product neutralizes each metal element in the form of oxide thereof.
The invention relates to a method for preparing kaolin high-whiteness refined mineral powder from complex kaolin mineral raw materials, which comprises the steps of taking complex kaolin minerals as raw materials, mixing the complex kaolin minerals such as kaolinite group minerals, enstatite, montmorillonite, quartz, feldspar, hydromica and iron-containing minerals, crushing, removing impurities, grinding, washing, screening and magnetically separating, grinding to 10-30 meshes to obtain kaolin refined mineral powder, preparing the prepared kaolin refined mineral powder into kaolin refined mineral powder slurry, further concentrating and homogenizing the kaolin refined mineral powder slurry to obtain ore pulp, preparing filter cakes, namely kaolin mud cakes, recycling filter-pressed water, homogenizing the kaolin mud cakes to adjust water content until the water content of the kaolin mud cakes is 20-30Wt%, crushing the kaolin mud cakes, conveying the crushed kaolin mud cakes to a belt conveyor or a belt conveyor by a constant feeder, conveying the crushed kaolin mud cakes to a vacuum pug mill by a belt conveyor, uniformly conveying the crushed kaolin mud cakes to the vacuum pug mill to perform pug mill to obtain kaolin clay pug, and then performing extrusion molding on the kaolin clay bars by a belt conveyor, wherein the crushed kaolin refined mud cakes are dried kaolin clay bars, the kaolin clay bars are prepared by a vacuum extrusion molding machine, the extrusion molding process, the kaolin clay bars are prepared by a vacuum extrusion molding process, wherein the kaolin clay bars are 20-extrusion molding process, the kaolin clay bars have the diameter of which is controlled by a length of which is about 11-20-.
And in the drying process, the kaolin mud strip materials are uniformly distributed on a drying mesh belt paved on the uppermost layer through a material distribution device swinging belt material distributor, the mesh belt is called as a mesh belt from bottom to top, the mesh belt is driven by a power motor to enter the inside of a dryer of the drying device at a constant speed, the kaolin mud strip materials sequentially fall from a first layer of mesh belt to a second layer of mesh belt and corresponding third, fourth and fifth layers of mesh belts from top to bottom, and in the falling process of the kaolin mud strip materials, the kaolin mud strip materials are overturned, the heating surface of the kaolin mud strip materials is changed, and the drying is more uniform. The kaolin clay strip material is controlled to be in contact drying with hot dry air in a drying device in a reverse convection gradient layer mode, namely the hot air moves upwards from the lowest layer material layer, high-temperature and low-temperature gas is firstly in contact with the kaolin clay strip material at the last drying stage of the lowest layer, the kaolin clay strip material is sequentially heated upwards, the kaolin clay strip material is in contact with the kaolin clay strip material in a reverse flow mode, the higher drying strength is guaranteed, moisture in the heated material is vaporized into steam, the steam and the air are mixed into wet air, the wet air is discharged through an exhaust fan, and the kaolin clay strip material is dried and then becomes dry kaolin clay strips.
And in the screening stage, the dried kaolin clay strips conveyed out from the drying mesh belt of the mesh bag drying device are screened before calcination, and the dried kaolin clay strips are screened to remove small particles and powder particles in the dried kaolin clay strips, so that the ring formation condition of the dried kaolin clay strip powder in the sintering process in the kiln is reduced, the sintering quality stability of the dried kaolin clay strip powder product can be greatly improved, and the whiteness of the kaolin mineral powder is improved.
Finally, entering a calcining stage, and in the calcining process, adding a whitening agent, and cooling to obtain kaolin high-whiteness mineral powder; the whiteness of the finished kaolin high-whiteness concentrate powder is increased by 3-5 degrees or a biological material is added as a whitening agent.
Example 2
Except for the described parts, the technical solutions in the following examples are the same as those in the embodiment and example 1 except for the described parts.
In this embodiment, a complex kaolin mineral raw material is a mixture of a kaolinite group mineral, montmorillonite, quartz and an iron-containing mineral in any proportion, and is subjected to crushing, impurity removal, grinding, water washing, screening, magnetic separation and grinding to 0-20 meshes to obtain a kaolin concentrate powder. Controlling the water content of the kaolin mud cake to be 21Wt%, namely controlling the water content of kaolin mud strips prepared from the kaolin mud cake through pugging treatment and extrusion molding to be about 21Wt%, controlling the water content of dried kaolin mud strips after drying treatment or the water content to be less than or equal to 5Wt%, and simultaneously controlling the bulk specific gravity of the dried kaolin mud strips to be 1.15-1.25 ton/m3Controlling the thickness of a pile layer of kaolin clay strips of the dry material to be less than or equal to 50mm during drying; controlling the width of the mesh belt to be 1.6m when the mesh belt is dried; controlling the drying air inlet temperature to be 300 ℃ and the drying air outlet temperature to be less than or equal to 100 ℃ during drying; the dried, dried kaolin clay slip enters the calcination stage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and it is intended that all variations and modifications which are within the spirit and scope of the present invention as defined by the appended claims be embraced by the present invention.
Claims (3)
1. A mineral separation method for preparing high-whiteness refined mineral powder from a complex kaolin ore raw material is characterized in that the complex kaolin ore is used as the raw material, the complex kaolin ore raw material is any one or a mixture of more of enstatite, montmorillonite, quartz, feldspar, hydromica and iron-containing mineral ores, and the kaolin refined mineral powder is prepared through crushing, impurity removal, grinding, water washing, screening and magnetic separation, and the method further comprises the following steps:
1) a forming process, namely stirring and mixing kaolin concentrate powder and water to prepare kaolin concentrate powder slurry, carrying out filter pressing on the kaolin concentrate powder slurry by using a filter pressing device to prepare kaolin mud cakes, carrying out pugging treatment on the kaolin mud cakes in a pugging device by using a conveying device to obtain kaolin pugging, and carrying out extrusion treatment on the kaolin pugging mud cakes by using an extrusion forming device to prepare kaolin mud strips;
2) drying, namely uniformly distributing the kaolin mud strip materials on a drying mesh belt in a drying device through a material distribution device, and controlling the kaolin mud strips to be in contact drying with hot dry air in the drying device in a gradient manner in a countercurrent gradient manner to obtain dry kaolin mud strips;
3) a screening process, namely screening the dried kaolin clay strips obtained in the step 2) by using a screening device to remove micro-particle materials to prepare screened dried kaolin clay materials; calcining the screened and dried kaolin mud at high temperature, then putting the calcined kaolin mud into a cooling device, cooling, crushing, screening and packaging to obtain high-whiteness concentrate powder;
wherein 1) the forming procedure comprises the steps of conveying the kaolin mud cake prepared by filter pressing to a vacuum pug mill through a constant feeder, mixing to obtain kaolin powder pug, and then placing the kaolin powder pug in a vacuum pug mill of an extrusion forming device for extrusion granulation to obtain kaolin mud strips;
wherein 2) the drying procedure, the distributing device is a swinging belt distributing device, and the drying mesh belt is divided into one to five layers according to upper and lower gradient levels; controlling the kaolin clay strip materials to be continuously turned over when being conveyed and dried on one to five layers of drying mesh belts, and drying the kaolin clay strip materials by heated drying air to obtain dry kaolin clay strips;
the water content of the prepared kaolin mud cake is controlled to be 20-30 Wt%; controlling the diameter phi of the kaolin clay strips to be 18-20 mm;
wherein 2) the drying procedure is that the inlet air temperature of the hot drying air in the drying device is controlled to be more than or equal to 300 ℃, and the outlet air temperature after drying is less than or equal to 100 ℃; the drying time is controlled to be 40-55 minutes.
2. The mineral processing method for preparing high-whiteness fine mineral powder from complex kaolin mineral raw materials according to claim 1, wherein the extrusion forming device in the forming process 1) is a QZ L50 type vacuum extrusion machine for extrusion forming, and the power of the vacuum extrusion machine is controlled to be 40-80 kw.
3. The mineral processing method for preparing high-whiteness mineral concentrate from complex kaolin ore raw materials according to claim 1, wherein the 2) drying procedure comprises the steps of controlling the width of a drying mesh belt to be 1.5-1.8m and controlling the stacking thickness of kaolin clay strips which are arranged on the drying mesh belt and used for drying materials to be less than or equal to 50 mm; the water content of the dried kaolin clay strips is controlled to be less than or equal to 5 Wt%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810092603.7A CN108246470B (en) | 2018-01-31 | 2018-01-31 | Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810092603.7A CN108246470B (en) | 2018-01-31 | 2018-01-31 | Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108246470A CN108246470A (en) | 2018-07-06 |
| CN108246470B true CN108246470B (en) | 2020-07-28 |
Family
ID=62743335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810092603.7A Active CN108246470B (en) | 2018-01-31 | 2018-01-31 | Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108246470B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110304900B (en) * | 2019-06-14 | 2022-04-12 | 东南大学 | Improved antique white brick and manufacturing method thereof |
| CN110681472B (en) * | 2019-10-09 | 2021-02-26 | 广西大化汇邦石材有限公司 | Quartz sand pickling-free wampee removing process |
| CN111362666A (en) * | 2020-03-26 | 2020-07-03 | 内蒙古大学 | Method for improving calcination whiteness of calcium kaolin by mechanochemical method |
| CN113457809A (en) * | 2021-05-18 | 2021-10-01 | 深圳市石能新型环保材料有限公司 | Calcium-containing environment-friendly material manufacturing process and device applied to printed packaging |
| CN113683095B (en) * | 2021-09-26 | 2023-03-17 | 苏州中材非金属矿工业设计研究院有限公司 | Method for purifying natural sodium bentonite containing cristobalite |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1055526A (en) * | 1990-04-12 | 1991-10-23 | 北京市中科材料工程研究所 | Refined kaolin calcined from kaolinite |
| CN1179880C (en) * | 2001-09-30 | 2004-12-15 | 秦春生 | Production method of wet ultra-fine calcined kaolin |
| DE102011084183A1 (en) * | 2011-03-25 | 2012-09-27 | Evonik Degussa Gmbh | Aqueous silane-based anti-corrosive formulation |
| CN103435336B (en) * | 2013-08-15 | 2015-02-04 | 何晓洪 | Self-forming glaze white jade porcelain pug and manufacturing method of porcelain pug product |
| CN104591707B (en) * | 2014-12-25 | 2018-03-20 | 喀左御成紫陶制品有限公司 | A kind of high quartzy domestic ceramics and preparation method thereof |
| CN204404735U (en) * | 2015-01-21 | 2015-06-17 | 河津市远东特种铝业有限公司 | A kind of band drier uniform distribution device |
| CN106524715A (en) * | 2016-12-09 | 2017-03-22 | 江西金辉再生资源股份有限公司 | Kaolin filter cake drying device |
| CN107056243A (en) * | 2017-05-17 | 2017-08-18 | 安徽青花坊瓷业股份有限公司 | A kind of production technology of new china |
-
2018
- 2018-01-31 CN CN201810092603.7A patent/CN108246470B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108246470A (en) | 2018-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108246470B (en) | Mineral separation method for preparing high-whiteness concentrate powder from complex kaolin ore raw material | |
| CN105541291B (en) | A kind of preparation method of the heat-resisting cooking device of boccaro | |
| CN106431204B (en) | Waste slag ceramics brick and powder used, adobe body and preparation method thereof | |
| JP7424656B2 (en) | Method for manufacturing ceramic particle mixture | |
| JP2021525216A (en) | Manufacturing method of ceramic articles | |
| US20210380490A1 (en) | Method for finely processing nonmetallic mineral | |
| CN112174558A (en) | Method for preparing active mineral admixture by using sand washing mud | |
| CN104446361A (en) | Recrystallized ceramic body paste and method for preparing ceramic products with same | |
| CN110357572A (en) | A kind of kaolin intelligence wet powder-making method for ceramic raw material | |
| CN111037729B (en) | Material distribution equipment, material distribution method and preparation method for full-body granite ceramic tile | |
| CN111018488B (en) | Production method of microcrystalline mullite calcined kaolin, obtained product and application | |
| CN112430065A (en) | Ceramic tile edge grinding slurry material and waste leftover material recycling production process | |
| WO1993019017A1 (en) | Composition for high pressure casting slip, high pressure casting slip and method for preparing the composition and slip | |
| UA138484U (en) | METHOD OF OBTAINING AKPRIME BRAND KAOLIN | |
| CN102166783B (en) | Production method of attapulgite china clay powder | |
| UA138483U (en) | METHOD OF OBTAINING AKFORM MARK KAOLIN | |
| CN110964230B (en) | Fine kaolin processing method | |
| KR100230598B1 (en) | Manufacturing method of particle-size aluminium silicate from kaolinite by high-temperature sintering method | |
| EP1156991B1 (en) | Treating kaolinitic clays | |
| UA136777U (en) | KAOLIN OF THE AKFORM BRAND | |
| CN108314322A (en) | A kind of micro-crystal plate and preparation method thereof | |
| UA136778U (en) | AKPRIME KAOLIN | |
| CN1432544A (en) | Sulphoaluminate cement clinker producing process with industrial waste | |
| CN114132939B (en) | Method for producing white carbon black by using silicon-implanted silicon ore | |
| UA121948C2 (en) | METHOD OF OBTAINING AKFORM BRAND KAOLIN AND AKFORM BRAND KAOLIN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 336400 Shanggao County Industrial Park, Yichun, Jiangxi Patentee after: Jiangxi Tiancheng Lithium Industry Co.,Ltd. Address before: 336400 Shanggao County Industrial Park, Yichun, Jiangxi Patentee before: JIANGXI BINGWU TIANCHENG ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A beneficiation method for producing high whiteness concentrate powder from complex kaolin ore raw materials Effective date of registration: 20231013 Granted publication date: 20200728 Pledgee: Jiangxi Shanggao Rural Commercial Bank Co.,Ltd. Business Department Pledgor: Jiangxi Tiancheng Lithium Industry Co.,Ltd. Registration number: Y2023980061179 |