CN101830707A - Method for producing baked bricks from alumina red mud - Google Patents
Method for producing baked bricks from alumina red mud Download PDFInfo
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- CN101830707A CN101830707A CN 201010133767 CN201010133767A CN101830707A CN 101830707 A CN101830707 A CN 101830707A CN 201010133767 CN201010133767 CN 201010133767 CN 201010133767 A CN201010133767 A CN 201010133767A CN 101830707 A CN101830707 A CN 101830707A
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Abstract
The invention discloses a method for producing baked bricks from alumina red mud. The baked bricks are prepared from the following raw materials in part by weight: 60 to 65 parts of red mud, 20 to 25 parts of coal cinder or flyash and 13 to 15 parts of coal gangue. The method comprises the steps of: 1, crushing the coal cinder or the flyash and the coal gangue until the fineness reaches 3 millimeters; 2, mixing the obtained substance and the red mud, conveying the mixture to a double-roll crusher for fine crushing until the fineness reaches 3 millimeters, and conveying the crushed mixture to a stirrer, and mixing and stirring by adding water in an amount accounting for 2 to 3 percent of the weight of the materials; 3, putting the obtained substance into a material containing tank for standing and aging; 4, putting the aged material into the stirrer, adding the water in an amount accounting for 1 to 2 percent of the weight of the aged material for mixing and stirring, feeding the mixed material into a vacuum brick extruding machine to extrude mud strips, and conveying the prepared air bricks to a drying room for drying; and 5, conveying the dried air bricks to a tunnel kiln for sintering, and performing natural cooling to obtain the baked bricks. The method has the advantages of realizing the regenerative utilization of the industrial solid waste red mud, saving cultivated land, solving the problem of the pollution of the red mud on environment, and reducing the energy consumption in the process of producing the baked bricks.
Description
Technical field
The present invention relates to vitrified brick, especially relate to the method for producing baked bricks from alumina red mud.
Background technology
Red mud also claims red soil, refines the industrial solid wastes of discharging behind the aluminum oxide from bauxite.It is big generally to contain the ferric oxide amount, and outward appearance is similar to redness of the skin or complexion earth, thereby gains the name.But have ferric oxide is less to be brown because of containing, even canescence.Refine in the alumina process, produce 1 ton of aluminum oxide and will discharge 0.2-0.6 ton red mud.Red mud is because of containing objectionable impuritiess such as alkali, so environmental pollution is serious.The mode that stack on land is taked in the discharging of red mud at present more, and this not only takies the farmland, pollutes water system, waves with the wind after the drying, again atmosphere pollution.In order to reduce pollution, the red mud dump bottom requires to lay watertight layer, shop soil plantation plant on the red mud heap.But actively reasonable approach is to carry out the comprehensive utilization of red mud, turns waste into wealth.
Summary of the invention
The object of the invention is to provide a kind of method of producing baked bricks from alumina red mud.
For achieving the above object, the present invention can take following technical proposals:
The method of producing baked bricks from alumina red mud of the present invention, it is prepared from by the following weight parts proportion raw material:
A, raw material: red mud 60-65; Cinder or flyash 20-25; Coal gangue 13-15;
B, preparation:
The first step, cinder or flyash, coal gangue are crushed to granularity 3mm with carefully;
Second step, with the first step gains mixes with red mud the back import oppositely rolling roller crusher in small, broken bits to granularity 3mm with carefully, enter in the stirrer water mixing stirring of adding weight of material 2-3% then;
The 3rd the step, with second the step gains place the charge pond to shelve ageing 50-70 hour;
The 4th goes on foot, the 3rd step was placed in the machine of mixing through aged material, the water mixing stirring that adds aged material weight 1-2%, feed vacuum extruder then and extrude the mud bar, after slitting shear machine, blank cutter are made adobe, be transported in the baking room and dry, bake out temperature 60-130 ℃, drying time 20-30 minute;
The 5th goes on foot, the adobe after the 4th step drying is transported to carries out sintering in the tunnel furnace, and sintering temperature 900-1000 ℃, sintering time 20-30 minute, naturally cooling promptly.
By the air inducing pipeline the hot cigarette of the 5th step tunnel furnace calcining section and waste heat are imported in the baking room in the 4th step, adobe is dried.
Advantage of the present invention just is to utilize the industrial solid wastes red mud of discharging in the refinement alumina process as main raw material, proportioning by science and auxiliary material slag or flyash, coal gangue mix, and take the GB5101-2003 requirement that is up to state standards fully of advanced production technique, the vitrified brick physical and chemical index of producing.Concrete data are as follows:
One, weathering resistance performance:
Water-intake rate mean value is 17%, and monolithic brick maximum value is 18%;
Saturation factor mean value is 0.72, and monolithic brick maximum value is 0.76;
Two, radioactivity:
Internal radiation index I
RA is 0.19, and external radiation exposure index Ir is 0.19;
Strength grade: mean value is 29.1MPa.
Simultaneously, the adobe in the 5th step of the present invention is in the tunnel furnace roasting process, owing to contain slag, coal gangue in the batching; The heat that every tile stove slag is provided is: the heat that 3616kJ, every block of brick coal gangue provide is: 241kJ; And every standard brick institute heat requirement is by 3470kJ.By above calculating as can be known, the heat that slag and coal gangue provide can satisfy adobe sintering needs, but considers the heat that flue gas is taken away and the heat lost by radiation of kiln body, only need to add part of coal as a supplement thermal source get final product.Therefore,, not only realized the regeneration of industrial solid wastes red muds, saved the arable land, solved the pollution problem of red mud, also reduced the energy consumption in the vitrified brick production process environment according to the method for the invention.
Description of drawings
Fig. 1 is technological process of production figure of the present invention.
Embodiment
Embodiment 1: as shown in Figure 1, the method for producing baked bricks from alumina red mud of the present invention is prepared from by the following weight parts proportion raw material:
A, raw material: red mud 60; Cinder or flyash 25; Coal gangue 15;
B, preparation:
The first step, cinder or flyash, coal gangue are crushed to granularity 3mm with carefully;
Second step, with the first step gains mixes with red mud the back import oppositely rolling roller crusher in small, broken bits to granularity 3mm with carefully, enter in the stirrer water mixing stirring of adding weight of material 3% then;
The 3rd the step, with second the step gains place the charge pond to shelve ageing 50 hours;
The 4th goes on foot, the 3rd step was placed in the machine of mixing through aged material, the water mixing stirring that adds aged material weight 2%, feed vacuum extruder then and extrude the mud bar, after slitting shear machine, blank cutter are made adobe, be transported in the baking room and dry, 60 ℃ of bake out temperatures, drying time 30 minutes;
The 5th goes on foot, the adobe after the oven dry of the 4th step is transported to carries out sintering in the tunnel furnace, 900 ℃ of sintering temperatures, and sintering time 30 minutes, naturally cooling is promptly.For further making full use of heat energy, by the air inducing pipeline the hot cigarette of the 5th step tunnel furnace calcining section and waste heat are imported in the baking room in the 4th step, adobe is dried.
Embodiment 2: as shown in Figure 1, the method for producing baked bricks from alumina red mud of the present invention is prepared from by the following weight parts proportion raw material:
A, raw material: red mud 65; Cinder or flyash 22; Coal gangue 13;
B, preparation:
The first step, cinder or flyash, coal gangue are crushed to granularity 3mm with carefully;
Second step, with the first step gains mixes with red mud the back import oppositely rolling roller crusher in small, broken bits to granularity 3mm with carefully, enter in the stirrer water mixing stirring of adding weight of material 2.5% then;
The 3rd the step, with second the step gains place the charge pond to shelve ageing 60 hours;
The 4th goes on foot, the 3rd step was placed in the machine of mixing through aged material, the water mixing stirring that adds aged material weight 1.5%, feed vacuum extruder then and extrude the mud bar, after slitting shear machine, blank cutter are made adobe, be transported in the baking room and dry, 90 ℃ of bake out temperatures, drying time 25 minutes;
The 5th goes on foot, the adobe after the 4th step drying is transported to carries out sintering in the tunnel furnace, 1000 ℃ of sintering temperatures, and sintering time 25 minutes, naturally cooling is promptly.For further making full use of heat energy, by the air inducing pipeline the hot cigarette of the 5th step tunnel furnace calcining section and waste heat are imported in the baking room in the 4th step, adobe is dried.
Embodiment 3: as shown in Figure 1, the method for producing baked bricks from alumina red mud of the present invention is prepared from by the following weight parts proportion raw material:
A, raw material: red mud 65; Cinder or flyash 20; Coal gangue 15;
B, preparation:
The first step, cinder or flyash, coal gangue are crushed to granularity 3mm with carefully;
Second step, with the first step gains mixes with red mud the back import oppositely rolling roller crusher in small, broken bits to granularity 3mm with carefully, enter in the stirrer water mixing stirring of adding weight of material 2-3% then;
The 3rd the step, with second the step gains place the charge pond to shelve ageing 70 hours;
The 4th goes on foot, the 3rd step was placed in the machine of mixing through aged material, the water mixing stirring that adds aged material weight 1%, feed vacuum extruder then and extrude the mud bar, after slitting shear machine, blank cutter are made adobe, be transported in the baking room and dry, 130 ℃ of bake out temperatures, drying time 20 minutes;
The 5th goes on foot, the adobe after the 4th step drying is transported to carries out sintering in the tunnel furnace, 950 ℃ of sintering temperatures, and sintering time 20 minutes, naturally cooling is promptly.For further making full use of heat energy, by the air inducing pipeline the hot cigarette of the 5th step tunnel furnace calcining section and waste heat are imported in the baking room in the 4th step, adobe is dried.
Claims (2)
1. the method for a producing baked bricks from alumina red mud, it is characterized in that: it is prepared from by the following weight parts proportion raw material:
A, raw material: red mud 60-65; Cinder or flyash 20-25; Coal gangue 13-15;
B, preparation:
The first step, cinder or flyash, coal gangue are crushed to granularity 3mm with carefully;
Second step, with the first step gains mixes with red mud the back import oppositely rolling roller crusher in small, broken bits to granularity 3mm with carefully, enter in the stirrer water mixing stirring of adding weight of material 2-3% then;
The 3rd the step, with second the step gains place the charge pond to shelve ageing 50-70 hour;
The 4th goes on foot, the 3rd step was placed in the machine of mixing through aged material, the water mixing stirring that adds aged material weight 1-2%, feed vacuum extruder then and extrude the mud bar, after slitting shear machine, blank cutter are made adobe, be transported in the baking room and dry, bake out temperature 60-130 ℃, drying time 20-30 minute;
The 5th goes on foot, the adobe after the 4th step drying is transported to carries out sintering in the tunnel furnace, and sintering temperature 900-1000 ℃, sintering time 20-30 minute, naturally cooling promptly.
2. according to the method for the described producing baked bricks from alumina red mud of claim 1, it is characterized in that: by the air inducing pipeline the hot cigarette of the 5th step tunnel furnace calcining section and waste heat are imported in the baking room in the 4th step, adobe is dried.
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| CN2010101337673A CN101830707B (en) | 2010-03-29 | 2010-03-29 | Method for producing baked bricks from alumina red mud |
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| CN2010101337673A CN101830707B (en) | 2010-03-29 | 2010-03-29 | Method for producing baked bricks from alumina red mud |
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| CN101830707B CN101830707B (en) | 2012-07-04 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491730A (en) * | 2011-11-25 | 2012-06-13 | 四川海吉尔环保科技开发有限公司 | Method for preparing artificial vesuvianite building block from Bayer red mud |
| CN102557576A (en) * | 2012-01-06 | 2012-07-11 | 河南理工大学 | Production process of red mud and coal gangue baked brick |
| CN102674719A (en) * | 2012-05-29 | 2012-09-19 | 贵州平坝宏大铝化工有限公司 | Production method for modifying red mud from bayer process and applications of modified red mud from bayer process |
| CN103030372A (en) * | 2012-12-16 | 2013-04-10 | 河南理工大学 | Bayer process red mud and gangue porous sintered brick and production method thereof |
| CN103103357A (en) * | 2012-11-23 | 2013-05-15 | 陈泉兴 | Method for drying, calcining and cooling metal slag material |
| CN104072069A (en) * | 2014-07-14 | 2014-10-01 | 山东大学 | Baking-free brick using coal gangue and red mud as main materials, and preparation method for baking-free brick |
| CN105084924A (en) * | 2015-08-03 | 2015-11-25 | 六安市永发新型建材有限责任公司 | Waterproof sintered brick containing various waste materials |
| CN105130386A (en) * | 2015-08-03 | 2015-12-09 | 六安市永发新型建材有限责任公司 | Red mud sintering brick having good thermal insulation effect |
| CN106477976A (en) * | 2016-10-21 | 2017-03-08 | 姜玉敬 | A kind of Application way of red mud |
| CN109503124A (en) * | 2019-01-08 | 2019-03-22 | 王永兴 | A kind of crack resistence porous brick and preparation method thereof |
| CN112299818A (en) * | 2020-11-05 | 2021-02-02 | 河北孟石代新材料科技有限公司 | Red mud sintered natural three-dimensional decorative building material blank, product and production method of product |
| CN112851304A (en) * | 2021-01-26 | 2021-05-28 | 山东鲁北国际新材料研究院有限公司 | Method for making bricks by sintering red mud |
| CN113277738A (en) * | 2021-06-07 | 2021-08-20 | 昆明理工大学 | Artificial volcanic rock calcined by using red mud and steel slag as main raw materials and preparation method thereof |
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| US3985567A (en) * | 1974-09-18 | 1976-10-12 | University Of Guyana | Method of treating bauxite waste red mud with acid and making construction bricks from the treated material |
| US4368273A (en) * | 1979-12-07 | 1983-01-11 | Chemokomplex Vegyipari Gep-Es Berendezes Export-Import Vallalat | Process for the utilization in the ceramics industry of red mud from alumina plants |
| CN101269948A (en) * | 2008-05-20 | 2008-09-24 | 贵州省建筑材料科学研究设计院 | Red mud baked brick and manufacturing method |
| CN101514110A (en) * | 2009-03-25 | 2009-08-26 | 阮克胜 | Red mud and fly ash fireproof insulation brick |
-
2010
- 2010-03-29 CN CN2010101337673A patent/CN101830707B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985567A (en) * | 1974-09-18 | 1976-10-12 | University Of Guyana | Method of treating bauxite waste red mud with acid and making construction bricks from the treated material |
| US4368273A (en) * | 1979-12-07 | 1983-01-11 | Chemokomplex Vegyipari Gep-Es Berendezes Export-Import Vallalat | Process for the utilization in the ceramics industry of red mud from alumina plants |
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| 《矿产保护与利用》 20021031 董风芝等 粉煤灰、赤泥烧结砖的研制 第50-51页 1-2 , 第5期 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102491730A (en) * | 2011-11-25 | 2012-06-13 | 四川海吉尔环保科技开发有限公司 | Method for preparing artificial vesuvianite building block from Bayer red mud |
| CN102491730B (en) * | 2011-11-25 | 2013-07-17 | 四川海吉尔环保科技开发有限公司 | Method for preparing artificial vesuvianite building block from Bayer red mud |
| CN102557576A (en) * | 2012-01-06 | 2012-07-11 | 河南理工大学 | Production process of red mud and coal gangue baked brick |
| CN102674719A (en) * | 2012-05-29 | 2012-09-19 | 贵州平坝宏大铝化工有限公司 | Production method for modifying red mud from bayer process and applications of modified red mud from bayer process |
| CN103103357A (en) * | 2012-11-23 | 2013-05-15 | 陈泉兴 | Method for drying, calcining and cooling metal slag material |
| CN103103357B (en) * | 2012-11-23 | 2014-04-09 | 陈泉兴 | Method for drying, calcining and cooling metal slag material |
| CN103030372A (en) * | 2012-12-16 | 2013-04-10 | 河南理工大学 | Bayer process red mud and gangue porous sintered brick and production method thereof |
| CN104072069A (en) * | 2014-07-14 | 2014-10-01 | 山东大学 | Baking-free brick using coal gangue and red mud as main materials, and preparation method for baking-free brick |
| CN105084924A (en) * | 2015-08-03 | 2015-11-25 | 六安市永发新型建材有限责任公司 | Waterproof sintered brick containing various waste materials |
| CN105130386A (en) * | 2015-08-03 | 2015-12-09 | 六安市永发新型建材有限责任公司 | Red mud sintering brick having good thermal insulation effect |
| CN106477976A (en) * | 2016-10-21 | 2017-03-08 | 姜玉敬 | A kind of Application way of red mud |
| CN109503124A (en) * | 2019-01-08 | 2019-03-22 | 王永兴 | A kind of crack resistence porous brick and preparation method thereof |
| CN112299818A (en) * | 2020-11-05 | 2021-02-02 | 河北孟石代新材料科技有限公司 | Red mud sintered natural three-dimensional decorative building material blank, product and production method of product |
| CN112851304A (en) * | 2021-01-26 | 2021-05-28 | 山东鲁北国际新材料研究院有限公司 | Method for making bricks by sintering red mud |
| CN112851304B (en) * | 2021-01-26 | 2022-08-09 | 山东鲁北国际新材料研究院有限公司 | Method for making brick by sintering red mud |
| CN113277738A (en) * | 2021-06-07 | 2021-08-20 | 昆明理工大学 | Artificial volcanic rock calcined by using red mud and steel slag as main raw materials and preparation method thereof |
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| CN101830707B (en) | 2012-07-04 |
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