CN103232253B - Method for producing homogenous refractory raw material by utilizing medium or low grade bauxite ore - Google Patents
Method for producing homogenous refractory raw material by utilizing medium or low grade bauxite ore Download PDFInfo
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- CN103232253B CN103232253B CN201310152635.9A CN201310152635A CN103232253B CN 103232253 B CN103232253 B CN 103232253B CN 201310152635 A CN201310152635 A CN 201310152635A CN 103232253 B CN103232253 B CN 103232253B
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Abstract
The invention relates to a method for producing a homogenous refractory raw material by utilizing medium or low grade bauxite ore, belonging to the technical field of refractory materials. The method comprises the following process steps of: crushing and homogenizing the medium or low grade bauxite ore, and grinding the bauxite ore by a wet method into the power of 200 to 400 meshes; sorting the medium or low grade bauxite ore into different grades of products through floatation and sorting; performing product formation through filter pressing dehydration and vacuum mud extrusion; and performing product firing by drying and sintering. The method has the advantages that the alumina homogenous refractory raw material can be produced by the medium or low grade bauxite ore, so that ore resources are utilized completely and the benefit is maximized.
Description
Technical field
The invention belongs to technical field of refractory materials, in particular, provide a kind of method utilizing middle-low grade bauxite ore to produce homogeneous refractory raw material, the homogeneous refractory raw material of described preparation can be different grade homogeneous refractory raw materials.
Background technology
China's bauxitic clay is produced refractory materials and is started from the 1950's, and through random mining and the improper utilization of decades, China's refractory material resources waste is serious, and the imbalance between supply and demand of refractory materials Mineral resources is more outstanding.
At present, alumina homogeneous material is mainly main raw material with bauxite ore, and through homogenizing, shaping, the refractory raw material that the explained hereafter such as calcining go out, has properity and uniform quality, stable feature.And the height of head grade, directly constrain the quality of homogeneous material product.Along with the exhaustion day by day of current higher-grade bauxite ore, middle-low bauxite resource production high-quality fire resistive material product how is used to become current main direction of studying.
It is the production method disclosing a kind of alumina homogenization material in the Chinese patent literature of CN101121604A at notification number, it take alumine as raw material, steps such as adopting fragmentation, batching, deironing, filtration, vacuum pugging, dry, burn till, obtain alumina homogenization material, its advantage is that have employed can not the alumine of direct sintering; Be the technique disclosing a kind of wet method powdered-semi-dry pressing production definition bauxitic clay base homogenizing refractory raw material in the Chinese patent literature of CN101108776A at notification number, it is with alumine ore deposit for raw material, adopts the operations such as fragmentation, ore grinding, ageing mixture, drying, screening, shaping, sintering to make fire-resistant homogenization material.Be characterized in adopting and carry out drying before compression moulding, obtain half dry material and be pressed.
But foregoing invention still just utilizes alumine, and middle-low grade bauxitic clay can not be adopted to produce alumina homogenization material.
Summary of the invention
The object of the present invention is to provide a kind of method utilizing middle-low grade bauxite ore to produce homogeneous refractory raw material, achieve and produce alumina homogeneous refractory raw material with low-grade bauxite, Mineral resources are fully utilized, make benefit reach maximization.
The bauxitic clay raw material production of the present invention's middle-low grade goes out the bauxitic clay homogeneous material raw material of several different grade, and its processing step is as follows:
(1) crushing process: middle-low grade bauxitic clay raw material are carried out fragmentation, homogenizing, forms raw material.
(2) wet-grinding technology and relative device: raw material good for fragmentation are carried out wet grinding, is finely ground to raw material, ore milling concentration is 60 ~ 80%.Grinding fineness is 200 ~ 400 orders.
(3) floatation process: levigate raw material is entered flotation cell, obtains the bauxitic clay raw material of 3 ~ 4 kinds of different grades through floatation process.
(4) filtration process: by the technique dehydration after filtration of the bauxitic clay raw material of different grade, obtain different grade aluminum alumina raw material filter cake.
(5) vacuum squeezes mud: undertaken shaping by the bauxitic clay raw material filter cake of different grade by de-airing extruder, forms bauxitic clay and wet base after cutting.
(6) dry: the base that wet by bauxitic clay is sent into dry kiln and carried out drying, forms bauxitic clay material base.
(7) burn till: dried bauxitic clay material base is sent into tunnel furnace and burns till, obtain the bauxitic clay homogeneous refractory raw material of different grade.
In described step (1) fragmentation, the bauxitic clay raw material of middle-low grade are carried out coarse crushing, in three grades of fragmentations broken, in small, broken bits, make its lumpiness be less than 15mm.
Adopt overflow ball mill in described step (2) wet-milling, ore milling concentration is 60 ~ 80%, and grinding fineness is 200 ~ 400 orders.
Be that 200 ~ 400 object ore pulps pump into flotation cell by fineness in described step (3) flotation, add water and make its concentration be 20 ~ 40%, add that sodium carbonate is pH value adjusting agent, Sodium hexametaphosphate 99 is dispersion agent, starch is inhibitor, sodium oleate is collecting agent, GF oil carries out sorting for pore forming material, obtain 3 kinds of products of different aluminum content: aluminium concentrate 1, aluminium concentrate 2, mine tailing.
In described step (4) filtration, filter cake moisture is 10 ~ 12%.
It is 10 ~ 15% that described step (5) vacuum squeezes wet base moisture content in mud.
In described step (6) drying, drying temperature is 120 ~ 150 DEG C, and time of drying is about 12 ~ 14h.
It is 1450 ~ 1550 DEG C that described step (7) burns till middle firing temperature.
Described middle-low grade bauxite ore is the bauxite ore of aluminium content 40% ~ 70%.
Described middle-low grade bauxite ore comprises the ore of the different shapes such as fine ore, muck, lump ore.
Technique scheme of the present invention has the following advantages compared with prior art: (1) the present invention with the bauxite ore of middle-low grade for raw material production bauxitic clay homogeneous material, solve the problem that current China's low-grade bauxite ore deposit utilization ratio is extremely low, meet the demand of Mining Sustainable Development; (2) the bauxitic clay fine ore of middle-low grade can be adopted in the present invention, also can adopt lump ore; (3) the present invention adopts the bauxite ore of same grade, and can produce the homogeneous material product of different grade, thus Mineral resources are fully utilized, benefit reaches maximization.
Embodiment
Illustrate enforcement of the present invention and feature below, but the present invention is not limited to the restriction of following embodiment.
Embodiment 1
Take aluminium content as the bauxite ore of 65% be raw material, gone out the bauxitic clay homogeneous material of different grade in 3 by following explained hereafter.
1, crushing process: by aluminium content be 65% bauxite ore raw material carry out fragmentation, homogenizing, particle size after cracking is less than 15mm.
2, wet-grinding technology and relative device: the raw material that fragmentation is good are delivered to overflow ball mill by rotary conveyor, add water and make ore milling concentration be 65%, grinding fineness is 325 orders.
3, floatation process: be that 325 object ore pulps pump into flotation cell by fineness, add water and make its concentration be 32%, adding sodium carbonate is pH value adjusting agent, adjustment slurry pH is 8.9; Adding Sodium hexametaphosphate 99 is dispersion agent, stirs 3min; Adding starch is inhibitor, stirs 4min; Adding sodium oleate is collecting agent, stirs 4min; Adding GF oil is pore forming material, stirs 2min; Scrape bubble 4min and obtain aluminium concentrate 1.Then in remaining ore pulp, add sodium carbonate adjustment slurry pH is again 9.2; Add Sodium hexametaphosphate 99, stir 3min; Add starch, stir 3min; Add sodium oleate, stir 3min; Add GF oil, stir 2min; Scrape bubble 4min and obtain aluminium concentrate 2; In flotation cell, remaining ore pulp is mine tailing.Thus obtain the bauxitic clay raw material of 3 kinds of different grades.
4, filtration process: adopt plate and frame(type)filter press and ceramic filter to dewater, obtain different grade raw material filter cake, moisture is less than 12%.
5, vacuum squeezes bricklayer's's skill: it is shaping that different grade raw material filter cake carries out crowded mud by de-airing extruder, forms wet base after cutting.
6, drying process: wet base is sent into dry kiln and carries out drying, drying temperature 140 DEG C, time of drying is 58h.
7, firing process: dried material base is sent into tunnel furnace and burns till, obtain the alumina-based homogeneous material of different grade.
Claims (1)
1. utilize middle-low grade bauxite ore to produce a method for homogeneous refractory raw material, it is characterized in that: its processing step is as follows:
(1) crushing process: middle-low grade bauxitic clay raw material are carried out fragmentation, homogenizing, forms raw material;
(2) wet-grinding technology and relative device: raw material good for fragmentation are carried out wet grinding, is finely ground to raw material, ore milling concentration is 60 ~ 80%; Grinding fineness is 200 ~ 400 orders;
(3) floatation process: levigate raw material is entered flotation cell, obtains the bauxitic clay raw material of 3 ~ 4 kinds of different grades through floatation process;
(4) filtration process: by the technique dehydration after filtration of the bauxitic clay raw material of different grade, obtain different grade aluminum alumina raw material filter cake;
(5) vacuum squeezes mud: undertaken shaping by the bauxitic clay raw material filter cake of different grade by de-airing extruder, forms bauxitic clay and wet base after cutting;
(6) dry: the base that wet by bauxitic clay is sent into dry kiln and carried out drying, forms bauxitic clay material base;
(7) burn till: dried bauxitic clay material base is sent into tunnel furnace and burns till, obtain the bauxitic clay homogeneous refractory raw material of different grade;
In step (1) crushing process, the bauxitic clay raw material of middle-low grade are carried out coarse crushing, in three grades of fragmentations broken, in small, broken bits, make its lumpiness be less than 15mm;
Adopt overflow ball mill in step (2) wet-grinding technology and relative device, ore milling concentration is 60 ~ 80%, and grinding fineness is 200 ~ 400 orders;
Be that 200 ~ 400 object ore pulps pump into flotation cell by fineness in step (3) floatation process, add water and make its concentration be 20 ~ 40%, add that sodium carbonate is pH value adjusting agent, Sodium hexametaphosphate 99 is dispersion agent, starch is inhibitor, sodium oleate is collecting agent, GF oil carries out sorting for pore forming material, obtain the product of different aluminum content;
In step (4) filtration process, filter cake moisture is 10 ~ 12%;
It is 10 ~ 15% that step (5) vacuum squeezes wet base moisture content in bricklayer's's skill;
In step (6) drying process, drying temperature is 120 ~ 150 DEG C, and time of drying is 12 ~ 14h;
In step (7) firing process, firing temperature is 1450 ~ 1550 DEG C;
Described middle-low grade bauxite ore is the bauxite ore of aluminium content 40% ~ 70%;
Described middle-low grade bauxite ore comprises fine ore, muck, lump ore.
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| CN105503219A (en) * | 2015-12-29 | 2016-04-20 | 通达耐火技术股份有限公司 | Alumina-base sintered corundum mullite and preparation method thereof |
| CN108373319A (en) * | 2018-01-16 | 2018-08-07 | 宫营方 | A method of preparing abrasive material grade bauxite using bauxite rawore powder |
| CN108191436A (en) * | 2018-01-16 | 2018-06-22 | 宫营方 | A kind of method for preparing refractory grade bauxite using bauxite rawore powder |
| CN114845971A (en) * | 2020-01-16 | 2022-08-02 | 塞泰克股份公司 | Method for producing a mixture for ceramic tiles |
| CN112624773B (en) * | 2020-10-26 | 2023-03-28 | 郑州金泰科技特种耐火材料有限公司 | Aluminum silicon carbide carbon brick and preparation method thereof |
| CN113021605A (en) * | 2021-03-02 | 2021-06-25 | 韩雄 | Flotation bauxite concentrate homogenizing sintering device and sintering process thereof |
| CN113173793A (en) * | 2021-05-19 | 2021-07-27 | 北京金隅通达耐火技术有限公司 | High-purity phase active mullite and preparation method thereof |
| CN115716756A (en) * | 2022-11-29 | 2023-02-28 | 阳泉金隅通达高温材料有限公司 | Preparation method and application of environment-friendly and energy-saving bauxite-based non-fired refractory raw material |
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| JP2005213139A (en) * | 2003-12-22 | 2005-08-11 | Refratechnik Holding Gmbh | Granulated raw material for refractory product, its producing method, and application of granulated raw material |
| CN101121604A (en) * | 2007-07-25 | 2008-02-13 | 濮阳濮耐高温材料（集团）股份有限公司 | Method for producing alumina homogenization material |
| WO2012040948A1 (en) * | 2010-09-29 | 2012-04-05 | 淄博市鲁中耐火材料有限公司 | Hercynite-magnesia series refractory raw material and production method thereof |
| CN102744146A (en) * | 2012-07-10 | 2012-10-24 | 河南东大矿业股份有限公司 | Ore-dressing method for low-grade bauxite |
| CN102826862A (en) * | 2012-09-04 | 2012-12-19 | 山西新型炉业集团有限公司 | Raw material proportion and producing method for bauxite-based dense homogenized grog |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005213139A (en) * | 2003-12-22 | 2005-08-11 | Refratechnik Holding Gmbh | Granulated raw material for refractory product, its producing method, and application of granulated raw material |
| CN101121604A (en) * | 2007-07-25 | 2008-02-13 | 濮阳濮耐高温材料（集团）股份有限公司 | Method for producing alumina homogenization material |
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| CN102744146A (en) * | 2012-07-10 | 2012-10-24 | 河南东大矿业股份有限公司 | Ore-dressing method for low-grade bauxite |
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Address after: 045011 mahuanggou section, Yinying Park, Yangquan economic and Technological Development Zone, Shanxi Province Patentee after: YANGQUAN JINYU TONGDA HIGH TEMPERATURE MATERIALS Co.,Ltd. Patentee after: Beijing Jinyu Tongda refractory Technology Co.,Ltd. Address before: 045013 Bai Quan Industrial Park, Yangquan, Shanxi Patentee before: YANGQUAN JINYU TONGDA HIGH TEMPERATURE MATERIALS Co.,Ltd. Patentee before: TONGDA REFRACTORY TECHNOLOGIES Co.,Ltd. |
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