CN104310944B - A kind of coal gangue sintering hollow brick - Google Patents

A kind of coal gangue sintering hollow brick Download PDF

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Publication number
CN104310944B
CN104310944B CN201410503451.7A CN201410503451A CN104310944B CN 104310944 B CN104310944 B CN 104310944B CN 201410503451 A CN201410503451 A CN 201410503451A CN 104310944 B CN104310944 B CN 104310944B
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China
Prior art keywords
adobe
hollow brick
sintering
gangue
coal gangue
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Expired - Fee Related
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CN201410503451.7A
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Chinese (zh)
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CN104310944A (en
Inventor
胡世军
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DINGYUAN COUNTY LVYUAN NEW BUILDING MATERIALS Co Ltd
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DINGYUAN COUNTY LVYUAN NEW BUILDING MATERIALS Co Ltd
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Abstract

The invention discloses a kind of coal gangue sintering hollow brick, it is made up of the raw material of following weight portion, gangue 50-60 part, bauxite 4-6 part, 20-35 part river silt mud, Boccaro shale 10-20 part, water 10-12 part, sintering, by broken, sealing ageing, base, drying, the hollow brick obtained, water absorption is strong, fireproof heat insulating;Comprcssive strength is high, and excellent combination property meets national standard;Wear-resistant, can directly carry, pile, yield rate is high;Energy-saving and emission-reduction, it is prevented that environmental pollution, ecological, environmental protective;Production technology is simple, and easy to make, with short production cycle, production cost is low, is conducive to mass industrialized production.

Description

A kind of coal gangue sintering hollow brick
Technical field
The present invention relates to construction material production field, particularly to a kind of coal gangue sintering hollow brick
Background technology
Brickmaking industry is highly energy-consuming, high pollution, the industry of high cost source and low output, each Bricks and Tiles Plant can obtain the emphasis of local Environmental Protection Agency and look after, the sintering temperature of most of Bricks and Tiles Plants is about 1300-1400 DEG C, power consumption height, in order to solve this problem, the engineers and technicians of industry take a lot of measure, usually enterprise takes kiln to widen, the measure lengthened reaches the purpose saved energy and reduce the cost, to realize being rapidly fired to, but said method needs enterprise to put into substantial amounts of fund for transforming kiln, and the space of taking up an area of kiln can be influenced by certain restriction, realize difficult, and do not allow shoveling to bake bricks now, the hollow brick water absorption baked bricks now with other succedaneum is not strong, not wear-resisting, pressure.
Summary of the invention
For solving the problems referred to above, the invention discloses a kind of coal gangue sintering hollow brick, water absorption is strong, pressure, and fire prevention, when baking bricks, energy resource consumption is few, and shrinkage factor is little.
For reaching above-mentioned purpose, technical scheme is as follows:
A kind of coal gangue sintering hollow brick, it is characterised in that: it is made up of the raw material of following weight portion, gangue 50-60 part, bauxite 4-6 part, 20-35 part river silt mud, Boccaro shale 10-20 part, water 10-12 part.
A kind of coal gangue sintering hollow brick, its concrete preparation method step is as follows:
(1) using hammer mill that Boccaro shale, gangue carry out break process respectively, after broken, particle size controls at 1-10mm;
(2) Central Control Room controls the inlet amount of Boccaro shale, gangue, pours blender into respectively through streamline and stirs 5-10 minute, so as to mix homogeneously;
(3) by streamline, the mixture after step (2) being entered twin rollers, high speed pair roller after adding water of spraying, rotating speed is 250-400 rev/min, and after pair roller, particle size controls at 1-2mm;
(4) compound after step (3) is entered ageing storehouse by streamline and seal ageing 2-3 days, period spraying and moisturizing, keep temperature 25-30 DEG C, pressure 0.5-2MPa;
(5) bauxite, river silt mud dry, and remove impurity, Homogeneous phase mixing;
(6) by entering brickmaking machine after the raw material mix homogeneously after step (4) (5), add water and extruded by evacuation and be cut into adobe;
(7) drying chamber drying is sent in cooling after 3-10 hour, and drying time is 10-30 hour, and adobe moisture content is 3-10%;
(8) adobe after step (7) being put in sintering oven and sinter, sintering temperature is 800-900 DEG C, and sintering time is 1-2 hour, 18-30 hour standing time, takes out after cooling.
As a modification of the present invention, the adobe moisture content after described step (6) is 10-12%.
As a modification of the present invention, the adobe after described step (6) is of a size of 240mm × 115mm × 90mm, and centre is provided with 9 holes, and each bore dia is 20mm.
As a modification of the present invention, 9 holes of described adobe are 3x3 arrangement.
As a modification of the present invention, outside described adobe, it is provided with lines.
The present invention is with gangue, river silt mud is that primary raw material is to make hollow brick, production technology is simple, easy to make, comprcssive strength is high, wear-resistant, production cost is low, do not use cement, gangue is the waste material after coal mining, river silt mud is the mud of precipitation in river, twice laid, energy-conserving and environment-protective, in sintering oven during sintering, gangue sintering time at 800-900 DEG C of temperature is to start spontaneous combustion after 1-2 hour, save the coal charge of sintering, decrease waste gas to discharge, and gangue spontaneous combustion in adobe, adobe can be sintered from the inside to surface thorough, do not have the uneven cracking phenomena caused of sintering.
Drying of the present invention is that the preheating utilizing sintering oven carries out, saving coal charge, for reducing production cost, described drying chamber is 3, drying sintering adopts the mode of " three dry single firing, semi-stiff extrusion process " to carry out, adobe after described step (6) all piles up on coaster, is provided with coaster and dries in 3 drying chambers respectively, then fully enters the disposable sintering of sintering oven, without adobe is stirred, direct pile is fired on coaster, reduces hand labor intensity, reduces production cost.
The present invention in step (4) to Boccaro shale, the mixture of gangue carries out sealing ageing, originally in its natural state ageing need 6-7 days can aquation and carry out ion exchange, surface and internal performance are uniform, ageing of the present invention is keeping temperature 25-30 DEG C, give certain pressure, time has only to 2-3 days, and under the pressure of about 1MPa aquation and ion exchange carry out more abundant, improve the plasticity of raw material, redox reaction can also be accelerated. cause that breeding is accelerated in microorganism, make raw material soft uniformly, and then reach to increase plasticity, improve mobility and cementability, make raw material surface smooth, improve processability and the drying property of raw material, improve the quality of hollow brick, gangue Boccaro shale raw material through high pressure ageing, the dry percent defective of product can reduce 10%, sintering percent defective can reduce 8%, plasticity index generally can improve 2-3, Aging Temperature is not less than 25 DEG C, winter production answers heating, spraying and moisturizing in ageing process, guarantee that ageing can be smoothed out, produce a desired effect.
The particle size of mixture is controlled at 1-2mm by the present invention in step (3), and the more thick water absorption of granule is more good, but hollow brick intensity reduces, sintering temperature is high, rough surface, and the more thin water absorption of granule is poor, but hollow brick intensity improves, reducing sintering temperature, surface is fine and smooth, controls particle size at 1-2mm whole structure best by practice, water absorption can either be ensured, ensure that hollow brick intensity, save the energy, surface is not coarse.
A certain amount of Boccaro shale is added in raw material, owing to Boccaro shale is a kind of half diagenesis being key component with clay mineral, iron-holder is higher and containing the composition of a great deal of flour sand level, smash rear and gangue, the hollow brick that river silt mud is made, solid, there are many small pores, sharply will not change and fragmentation because of temperature, again will not porcelain, hard do not crush, there is relatively strong absorptive, shrinkage factor is little, have wear-resisting, pressure, acid and alkali-resistance, the several functions such as aging resistance, it is mixed with the hollow brick quality soft or hard appropriateness of Boccaro shale, pollution-free, it is suitable for people's requirement to hollow brick.
Adding a certain amount of bauxite in raw material, the hollow brick processed through preparation method of the present invention plays fire-resistant, insulation effect, makes the excellent combination property of hollow brick, meets national standard.
The hollow brick that the present invention is produced carries out performance detection, and testing result is as follows: comprcssive strength 13.34Mpa, shrinkage value 0.52mm/m, the loss in weight 4.4%, frost resistance loss of strength 18%, water absorption rate 21%, and excellent combination property meets national standard.
The invention has the beneficial effects as follows:
1. water absorption is strong, fireproof heat insulating;
2. comprcssive strength is high, and excellent combination property meets national standard;
3. wear-resistant, can directly carry, pile, yield rate is high;
4. energy-saving and emission-reduction, it is prevented that environmental pollution, ecological, environmental protective;
5. production technology is simple, and easy to make, with short production cycle, production cost is low, is conducive to mass industrialized production.
Detailed description of the invention
Embodiment 1
A kind of coal gangue sintering hollow brick described in the present embodiment, is made up of the raw material of following weight portion, gangue 55 parts, bauxite 5 parts, 28 parts of river silt mud, Boccaro shale 12 parts, 10 parts of water.
The concrete preparation process of described a kind of coal gangue sintering hollow brick is as follows:
(1) using hammer mill that Boccaro shale, gangue carry out break process respectively, after broken, particle size controls at 1-5mm;
(2) Central Control Room controls the inlet amount of Boccaro shale, gangue, pours blender into respectively through streamline and stirs 8 minutes, so as to mix homogeneously;
(3) by streamline, the mixture after step (2) being entered twin rollers, high speed pair roller after adding water of spraying, rotating speed is 300 revs/min, and after pair roller, particle size controls at 2mm;
(4) compound after step (3) is entered ageing storehouse by streamline and seal ageing 3 days, period spraying and moisturizing, keep temperature 30 DEG C, pressure 1MPa;
(5) bauxite, river silt mud dry, and remove impurity, Homogeneous phase mixing;
(6) brickmaking machine will be entered after the raw material mix homogeneously after step (4) (5), add water and extruded by evacuation and be cut into adobe, adobe moisture control is 12%, and adobe is of a size of 240mm × 115mm × 90mm, is provided with 9 holes in the middle of adobe, arrange for 3x3, each bore dia is 20mm, is provided with lines outside adobe, and after evacuation extruding, adobe temperature is high, all it is deposited on coaster, it is possible to pile 12 layers;
(7) drying chamber drying is sent in cooling after 6 hours, and drying time is 18 hours, and adobe moisture content is 7%;
(8) adobe after step (7) being put in sintering oven and sinter, sintering temperature is 800 DEG C, and sintering time is 1 hour, 24 hours standing times, takes out after cooling.
Hollow brick described in the present embodiment is carried out performance detection, and testing result is as follows: comprcssive strength 13.12Mpa, shrinkage value 0.52mm/m, the loss in weight 3.6%, frost resistance loss of strength 18%, water absorption rate 21%, and excellent combination property meets national standard.
Embodiment 2
A kind of coal gangue sintering hollow brick described in the present embodiment, is made up of the raw material of following weight portion, gangue 60 parts, bauxite 6 parts, 30 parts of river silt mud, Boccaro shale 18 parts, 11 parts of water.
Described a kind of coal gangue sintering hollow brick, its concrete preparation process is as follows:
(1) using hammer mill that Boccaro shale, gangue carry out break process respectively, after broken, particle size controls at 8mm;
(2) Central Control Room controls the inlet amount of Boccaro shale, gangue, pours blender into respectively through streamline and stirs 10 minutes, so as to mix homogeneously;
(3) by streamline, the mixture after step (2) being entered twin rollers, high speed pair roller after adding water of spraying, rotating speed is 400 revs/min, and after pair roller, particle size controls at 1mm;
(4) compound after step (3) is entered ageing storehouse by streamline and seal ageing 3 days, period spraying and moisturizing, keep temperature 28 DEG C, pressure 2MPa;
(5) bauxite, river silt mud dry, and remove impurity, Homogeneous phase mixing;
(6) brickmaking machine will be entered after the raw material mix homogeneously after step (4) (5), add water and extruded by evacuation and be cut into adobe, adobe moisture control is 11%, and adobe is of a size of 240mm × 115mm × 90mm, is provided with 12 holes in the middle of adobe, arrange for 3x4, each bore dia is 18mm, is provided with lines outside adobe, and after evacuation extruding, adobe temperature is high, all it is deposited on coaster, it is possible to pile 15 layers;
(7) drying chamber drying is sent in cooling after 9 hours, and drying time is 25 hours, and adobe moisture content is 4%;
(8) adobe after step (7) being put in sintering oven and sinter, sintering temperature is 850 DEG C, and sintering time is 2 hours, 30 hours standing times, takes out after cooling.
The performance indications of the hollow brick described in the present embodiment are: comprcssive strength 13.34MPa, shrinkage value 0.52mm/m, the loss in weight 4.4%, frost resistance loss of strength 19%, water absorption rate 22%, and excellent combination property meets national standard.
Technological means disclosed in the present invention program is not limited only to the technological means disclosed in above-mentioned embodiment, also includes the technical scheme being made up of above technical characteristic combination in any.

Claims (5)

1. a coal gangue sintering hollow brick, it is characterised in that: being made up of the raw material of following weight portion, gangue 50-60 part, bauxite 4-6 part, 20-35 part river silt mud, Boccaro shale 10-20 part, water 10-12 part, its preparation methods steps is as follows:
(1) using hammer mill that Boccaro shale, gangue carry out break process respectively, after broken, particle size controls at 1-10mm;
(2) Central Control Room controls the inlet amount of Boccaro shale, gangue, pours blender into respectively through streamline and stirs 5-10 minute, so as to mix homogeneously;
(3) by streamline, the mixture after step (2) being entered twin rollers, high speed pair roller after adding water of spraying, rotating speed is 200-400 rev/min, and after pair roller, particle size controls at 1-2mm;
(4) compound after step (3) is entered ageing storehouse by streamline and seal ageing 2-3 days, period spraying and moisturizing, keep temperature 25-30 DEG C, pressure 0.5-2MPa;
(5) bauxite, river silt mud dry, and remove impurity, Homogeneous phase mixing;
(6) by entering brickmaking machine after the raw material mix homogeneously after step (4) (5), add water and extruded by evacuation and be cut into adobe;
(7) drying chamber drying is sent in cooling after 3-10 hour, and drying time is 10-30 hour, and adobe moisture content is 3-10%;
(8) adobe after step (7) being put in sintering oven and sinter, sintering temperature is 800-900 DEG C, and sintering time is 1-2 hour, 18-30 hour standing time, takes out after cooling.
2. a kind of coal gangue sintering hollow brick according to claim 1, it is characterised in that: the adobe moisture content after described preparation method step (6) is 10-12%.
3. a kind of coal gangue sintering hollow brick according to claim 1, it is characterised in that: the adobe after described preparation method step (6) is of a size of 240mm × 115mm × 90mm, and centre is provided with 9 holes, and each bore dia is 20mm.
4. a kind of coal gangue sintering hollow brick according to claim 3, it is characterised in that: 9 holes of described adobe are 3x3 arrangement.
5. a kind of coal gangue sintering hollow brick according to claim 1, it is characterised in that: it is provided with lines outside the adobe after described preparation method step (6).
CN201410503451.7A 2014-09-28 2014-09-28 A kind of coal gangue sintering hollow brick Expired - Fee Related CN104310944B (en)

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Publication number Priority date Publication date Assignee Title
CN106396612A (en) * 2016-08-26 2017-02-15 安徽中扬新材科技有限公司 Wear-resistant high-compressive-strength hollow brick, and preparation method thereof
CN106380180A (en) * 2016-08-26 2017-02-08 安徽中扬新材科技有限公司 High-strength hollow brick and preparation method thereof
CN106380179A (en) * 2016-08-26 2017-02-08 安徽中扬新材科技有限公司 Hollow brick strong in water absorbability, and preparation method thereof
CN106316360A (en) * 2016-08-26 2017-01-11 安徽中扬新材科技有限公司 Wear-resisting environment-friendly hollow bricks and preparation method thereof
CN107266018A (en) * 2017-07-26 2017-10-20 合肥华盖光伏科技有限公司 A kind of modified bauxite hollow brick and preparation method thereof

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CN101941808A (en) * 2010-08-20 2011-01-12 李国典 Method of using black mud discharged by paper mill for producing shale baked bricks
CN102491725A (en) * 2011-11-16 2012-06-13 宝丰县人和新型建材有限公司 Fired brick prepared from sludge
CN102765928A (en) * 2012-07-05 2012-11-07 浙江特拉建材有限公司 Brick manufacturing method

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KR101198327B1 (en) * 2009-12-11 2012-11-06 이세린 Method for Manufacturing Lightweight Construction Material Using Waste Sludge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101182184A (en) * 2007-02-16 2008-05-21 杨伟苗 Environment-friendly brick and method for manufacturing same
CN101941808A (en) * 2010-08-20 2011-01-12 李国典 Method of using black mud discharged by paper mill for producing shale baked bricks
CN102491725A (en) * 2011-11-16 2012-06-13 宝丰县人和新型建材有限公司 Fired brick prepared from sludge
CN102765928A (en) * 2012-07-05 2012-11-07 浙江特拉建材有限公司 Brick manufacturing method

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