CN103011740A - Steam-curing-free light-weight wall body carbonized brick and preparation method thereof - Google Patents
Steam-curing-free light-weight wall body carbonized brick and preparation method thereof Download PDFInfo
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- CN103011740A CN103011740A CN2012104090309A CN201210409030A CN103011740A CN 103011740 A CN103011740 A CN 103011740A CN 2012104090309 A CN2012104090309 A CN 2012104090309A CN 201210409030 A CN201210409030 A CN 201210409030A CN 103011740 A CN103011740 A CN 103011740A
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Abstract
The invention discloses a steam-curing-free light-weight wall body carbonized brick, which is characterized by comprising the following components in parts by weight: 70 to 75 parts of lead and zinc mine tailing, 18 to 22 parts of quick lime, 2 to 3 parts of gypsum, 3 to 8 parts of cement, aluminum powder and cement foaming agent, wherein 480 to 520 grams of aluminum powder needs to be added per every cubic meter of light-weight wall body carbonized brick; and 380 to 420 grams of cement foaming agent needs to be added per cubic meter of light-weight wall body carbonized brick. The invention also provides a method for preparing the steam-curing-free light-weight wall body carbonized brick. During preparation, fume produced by production of mature cement in a rotary kiln can be fully used, so that emission of pollutant CO2 is reduced; afterheat is fully used; an effect of saving energy is achieved; and an environment-friendly concept is met.
Description
Technical field
The present invention relates to a kind of non-evaporating foster Light Wall carbonated lime brick, the invention still further relates to the preparation method of this kind Light Wall carbonated lime brick.
Background technology
Enter 21 century, green, environmental protection becomes the theme in the world, and along with the high speed development that Chinese national economy is built, energy-conservation, reduction of discharging, low-carbon (LC) and recycling economy become the fundamental policy of China.Building material industry is the industry of eating quantity of slag maximum, is bearing the heavy burden of recycling economy.
Dragon's pool township, strata in Shizhu, Chongqing county is one of important producing region of plumbous zinc ore, the plumbous zinc ore of a large amount of high-quality that distributing, for a long time owing to reasons such as fund and mismanagements, only live again to produce and ignore a large amount of Pb-Zn tailings of Pollution abatement generation in a lot of mining areas in the process of the plumbous zinc ore of exploitation, and Pb-Zn tailings has caused the soil and environment around the mining area and seriously influenced.Heavy metals mining area has caused the serious heavy metal contamination of soil and river by release and migration under the earth's surface biological geochemistry process, and these contaminated water enter farm crop by irrigation method, and enter human body by food chain, people and animals' existence, health and living environment near the mining area are constituted a serious threat.
The method of traditional mode of production cement clinker is that river sand and Wingdale are sent in the rotary kiln, at high temperature calcining, and quenching obtains cement clinker, is utilizing rotary kiln to prepare in the process of cement clinker, and (main component is CO to the stack gas of generation
2) temperature have about 550-650 ℃, at present in process of production people directly with this gaseous emission to air, cause the waste of environmental pollution and the energy, do not meet the theory of environmental protection.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of non-evaporating foster Light Wall carbonated lime brick, its main raw material(s) is Pb-Zn tailings, has solved the problem that existing Pb-Zn tailings pollutes.
Another object of the present invention is to provide the preparation method of the non-evaporating foster Light Wall carbonated lime brick of this kind, the problem of the pollution of stack gas and energy dissipation when having solved present production cement clinker.
The present invention is achieved in that a kind of non-evaporating foster Light Wall carbonated lime brick, and it is characterized in that: its starting material comprise the following component of parts by weight:
Pb-Zn tailings 70-75 part, unslaked lime 18-22 part, gypsum 2-3 part, cement 3-8 part and aluminium powder and cement blowing agent; The amount of described aluminium powder is that every cubic metre Light Wall carbonated lime brick need to add aluminium powder 480-520g, and the amount of described cement blowing agent need to add cement blowing agent 380-420g for the Light Wall carbonated lime brick of every cubic metre of production.
Adopt technique scheme, the main component of Pb-Zn tailings sees the following form:
We can find out from upper table, and Pb-Zn tailings can be considered as qualified siliceous material, can replace clay and iron powder to prepare carbonated lime brick, and the present invention consumes Pb-Zn tailings in a large number, have solved the problem that present Pb-Zn tailings is piled up contaminate environment.
In technique scheme: the content of described unslaked lime requirement active calcium oxide 〉=80%, content of magnesia≤2%, the digestion temperature is 53 ℃; Digestion rate is 10～15min; Burning lime content≤2%.
In technique scheme: described gypsum requires CaSO
42H
2O content 〉=85%, phosphorus pentoxide content≤3%, presetting period 〉=6min, final setting time≤30min.
Another object of the present invention is achieved in that a kind of preparation method of non-evaporating foster Light Wall carbonated lime brick, it is characterized in that: finish in accordance with the following steps:
(1) with the unslaked lime in the claim 1 and gypsum through after the fragmentation, add with Pb-Zn tailings and to carry out ball milling in the ball mill, ball milling tails over 10% to the 0.08mm square hole sieve, obtains mixed powder;
(2) above-mentioned mixed powder is sent in the stirrer, adding cement, aluminium powder, cement blowing agent and water are stirred to and are thick;
(3) will produce the stack gas that rotary kiln produces in the cement clinker process introduces in the low temperature reservation chamber of carbonization tunnel furnace entrance front end, the thick object that obtains in the step (2) is poured in the mould, place the low temperature reservation chamber to carry out initial set, the then demoulding after the quiet 1-1.5h of stopping is continued in the low temperature reservation chamber, cutting and obtain just base, the main component of described stack gas is CO
2, temperature is 550-650 ℃, the time of described initial set is 5-6 hour;
(4) the first base that obtains in the step (3) is sent in the carbonization tunnel furnace, in the stack gas introducing carbonization tunnel furnace that simultaneously rotary kiln in the above-mentioned production cement clinker process is produced first base is carried out carbonization and obtain non-evaporating foster light wall brick.
At first, the method is utilized the waste heat of rotary kiln stack gas, shortened the time (the normal temperature presetting period needed greater than 12 hours) of hot cell initial set, simultaneously the stack gas in the rotary kiln is sent in the carbonization tunnel furnace, first base is carried out carbonization, just forming a large amount of tiny holes that seal in the base, utilize the waste heat of stack gas, carbonization tunnel furnace itself does not need to reheat, and saves the energy, meets the theory of environmental protection.
In technique scheme: the time of carbonization is 6-7 hour in the described step (4).
Beneficial effect:
The non-evaporating foster carbonization light wall brick of the present invention's preparation is compared with existing wall body brick
(1) lightweight, density is little, and density is 160 kg/m
3, and novel wall material grade commonly used is 300 ~ 1200kg/m
3, in the building structure such as the external and internal wall of buildings, aspect, flooring, column, adopt this kind material, weight is reduced greatly.
(2) thermal and insulating performance is good, contains the tiny hole of a large amount of sealings in the non-evaporating foster carbonization light wall brick of carbonization of the present invention preparation, has good thermal property, i.e. good thermal and insulating performance, and thermal conductivity is between 0.08 ~ 0.30w/ (mK).Has good energy-saving effect.
(3) sound-proofing properties is good, and the non-evaporating foster carbonization light wall brick genus polyporus material of carbonization of the present invention preparation also is good sound-proof material, can adopt this material as pugging at floor and the insulating board of motorway, the top layer of underground structure etc. of buildings.
(4) fire resistance is good, and the non-evaporating foster carbonization light wall brick of carbonization of the present invention's preparation is inorganic materials, can not burn, and has good resistivity against fire, uses at buildings, can improve the fire resistance of buildings.
(5) other performances, the non-evaporating foster carbonization light wall brick of carbonization of the present invention preparation have also in the construction process that pumpability is good, and waterproof ability is strong, and impact energy absorption characteristic is good, and the industrial residue utilization scope is wide, has the advantages such as cheap.
(6) anti-seismic performance is good, and the non-evaporating foster carbonization light wall brick light weight of carbonization of the present invention's preparation greatly reduces structural weight per square meter, has improved two antidetonation ranks than the clay brick building.
(7) the present invention consumes in a large number lead-zinc ore tailings and solves problem of environmental pollution and potential safety hazard, and the waste heat that will produce simultaneously the stack gas that produces in the cement clinker process is used, and plays energy-conservation effect, reduces CO
2Gas purging.
Embodiment
The present invention is described further below in conjunction with specific embodiment
Embodiment 1
Main raw material(s) is 70 parts of Pb-Zn tailings, 22 parts of unslaked limes, and 2 parts in gypsum, 3 parts of cement,
Every cubic metre Light Wall carbonated lime brick adds aluminium powder 480g, and the Light Wall carbonated lime brick of producing every cubic metre need to add cement blowing agent 380g.
Wherein unslaked lime requires the content of active calcium oxide 〉=80%, content of magnesia≤2%, and the digestion temperature is 53 ℃; Digestion rate is 10～15min; Burning lime content≤2%.
Gypsum requires CaSO
42H
2O content 〉=85%, phosphorus pentoxide content≤3%, presetting period 〉=6min, final setting time≤30min.
Aluminium powder specification of quality: the regulation that should meet JC/T 407-2000.
(1) with above-mentioned unslaked lime and gypsum through after the fragmentation, add with Pb-Zn tailings and to carry out ball milling in the ball mill, ball milling tails over 10% to the 0.08mm square hole sieve, obtains mixed powder;
(2) above-mentioned mixed powder is sent in the stirrer, adding cement, aluminium powder, cement blowing agent and water are stirred to and are thick, and the add-on of water is 20% of material total amount.
(3) stack gas that rotary kiln in the traditional mode of production cement clinker process is produced is introduced in the low temperature reservation chamber of carbonization tunnel furnace entrance front end, and the main component of described stack gas is CO
2, temperature is 550-650 ℃, and the thick object that obtains in the step (2) is poured in the mould, places the low temperature reservation chamber to carry out initial set, presetting period 5 hours, then the demoulding behind the quiet 1-1.5h of stopping of continuation, cutting obtain just base in the low temperature reservation chamber;
(4) the first base that obtains in the step (3) is sent in the carbonization tunnel furnace, the stack gas that simultaneously rotary kiln in the above-mentioned production cement clinker process is produced is introduced the carbonization of in the carbonization tunnel furnace first base being carried out 6-7 hour and is obtained non-evaporating foster light wall brick.
Embodiment 2
Main raw material(s) is 75 parts of Pb-Zn tailings, 18 parts of unslaked limes, and 3 parts in gypsum, 8 parts of cement,
Every cubic metre Light Wall carbonated lime brick adds aluminium powder 500g, and the Light Wall carbonated lime brick of producing every cubic metre need to add cement blowing agent 400g.
Wherein unslaked lime requires the content of active calcium oxide 〉=80%, content of magnesia≤2%, and the digestion temperature is 53 ℃; Digestion rate is 10～15min; Burning lime content≤2%.
Gypsum requires CaSO
42H
2O content 〉=85%, phosphorus pentoxide content≤3%, presetting period 〉=6min, final setting time≤30min.
Aluminium powder specification of quality: the regulation that should meet JC/T 407-2000.
(1) with above-mentioned unslaked lime and gypsum through after the fragmentation, add with Pb-Zn tailings and to carry out ball milling in the ball mill, ball milling tails over 10% to the 0.08mm square hole sieve, obtains mixed powder;
(2) above-mentioned mixed powder is sent in the stirrer, adding cement, aluminium powder, cement blowing agent and water are stirred to and are thick, and the add-on of water is 20% of material total amount.
(3) stack gas that rotary kiln in the traditional mode of production cement clinker process is produced is introduced in the low temperature reservation chamber of carbonization tunnel furnace entrance front end, and the main component of described stack gas is CO
2, temperature is 550-650 ℃, and the thick object that obtains in the step (2) is poured in the mould, and the time that places the low temperature reservation chamber to carry out initial set, initial set is 6 hours, and then the demoulding behind the quiet 1-1.5h of stopping of continuation, cutting obtain just base in the low temperature reservation chamber;
(4) the first base that obtains in the step (3) is sent in the carbonization tunnel furnace, the stack gas that simultaneously rotary kiln in the above-mentioned production cement clinker process is produced is introduced the carbonization of in the carbonization tunnel furnace first base being carried out 6-7 hour and is obtained non-evaporating foster light wall brick.
Embodiment 3
Main raw material(s) is 72 parts of Pb-Zn tailings, 20 parts of unslaked limes, and 3 parts in gypsum, 5 parts of cement,
Every cubic metre Light Wall carbonated lime brick adds aluminium powder 520g, and the Light Wall carbonated lime brick of producing every cubic metre need to add cement blowing agent 420g.
Wherein unslaked lime requires the content of active calcium oxide 〉=80%, content of magnesia≤2%, and the digestion temperature is 53 ℃; Digestion rate is 10～15min; Burning lime content≤2%.
Gypsum requires CaSO
42H
2O content 〉=85%, phosphorus pentoxide content≤3%, presetting period 〉=6min, final setting time≤30min.
Aluminium powder specification of quality: the regulation that should meet JC/T 407-2000.
(1) with above-mentioned unslaked lime and gypsum through after the fragmentation, add with Pb-Zn tailings and to carry out ball milling in the ball mill, ball milling tails over 10% to the 0.08mm square hole sieve, obtains mixed powder;
(2) above-mentioned mixed powder is sent in the stirrer, adding cement, aluminium powder, cement blowing agent and water are stirred to and are thick, and the add-on of water is 20% of material total amount.
(3) stack gas that rotary kiln in the traditional mode of production cement clinker process is produced is introduced in the low temperature reservation chamber of carbonization tunnel furnace entrance front end, and the main component of described stack gas is CO
2, temperature is 550-650 ℃, and the thick object that obtains in the step (2) is poured in the mould, and the time that places the low temperature reservation chamber to carry out initial set, initial set is 5.5 hours, and then the demoulding behind the quiet 1-1.5h of stopping of continuation, cutting obtain just base in the low temperature reservation chamber;
(4) the first base that obtains in the step (3) is sent in the carbonization tunnel furnace, in the stack gas introducing carbonization tunnel furnace that simultaneously rotary kiln in the above-mentioned production cement clinker process is produced first base is carried out carbonization and obtain non-evaporating foster light wall brick, carbonization time is 6-7 hour.
Claims (5)
1. non-evaporating foster Light Wall carbonated lime brick, it is characterized in that: its starting material comprise the following component of parts by weight:
Pb-Zn tailings 70-75 part, unslaked lime 18-22 part, gypsum 2-3 part, cement 3-8 part and aluminium powder and cement blowing agent; The amount of described aluminium powder need to add aluminium powder 480-520g for the Light Wall carbonated lime brick of every cubic metre of production, and the amount of described cement blowing agent need to add cement blowing agent 380-420g for the Light Wall carbonated lime brick of every cubic metre of production.
2. described non-evaporating foster Light Wall carbonated lime brick according to claim 1 is characterized in that: described unslaked lime requires the content of active calcium oxide 〉=80%, content of magnesia≤2%, and the digestion temperature is 53 ℃; Digestion rate is 10～15min; Burning lime content≤2%.
3. described non-evaporating foster Light Wall carbonated lime brick according to claim 1, it is characterized in that: described gypsum requires CaSO
42H
2O content 〉=85%, phosphorus pentoxide content≤3%, presetting period 〉=6min, final setting time≤30min.
4. the preparation method of a non-evaporating foster Light Wall carbonated lime brick is characterized in that: finish in accordance with the following steps:
(1) with the unslaked lime in the claim 1 and gypsum through after the fragmentation, add with Pb-Zn tailings and to carry out ball milling in the ball mill, ball milling tails over 10% to the 0.08mm square hole sieve, obtains mixed powder;
(2) above-mentioned mixed powder is sent in the stirrer, adding cement, aluminium powder, cement blowing agent and water are stirred to and are thick;
(3) will produce the stack gas that rotary kiln produces in the cement clinker process introduces in the low temperature reservation chamber of carbonization tunnel furnace entrance front end, the thick object that obtains in the step (2) is poured in the mould, place the low temperature reservation chamber to carry out initial set, the then demoulding after the quiet 1-1.5h of stopping is continued in the low temperature reservation chamber, cutting and obtain just base, the main component of described stack gas is CO
2, temperature is 550-650 ℃, the time of described initial set is 5-6 hour;
(4) the first base that obtains in the step (3) is sent in the carbonization tunnel furnace, in the stack gas introducing carbonization tunnel furnace that simultaneously rotary kiln in the above-mentioned production cement clinker process is produced first base is carried out carbonization and obtain non-evaporating foster light wall brick.
5. the preparation method of described non-evaporating foster Light Wall carbonated lime brick according to claim 4, it is characterized in that: the time of carbonization is 6-7 hour in the described step (4).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104860599A (en) * | 2015-05-22 | 2015-08-26 | 蚌埠营军新型墙体材料有限公司 | Preparation method of aerated brick with good waterproof performance |
| CN105060742A (en) * | 2015-07-27 | 2015-11-18 | 中国科学院武汉岩土力学研究所 | Preparation method for low-grade manganese tailing-based binding material |
| CN105294038A (en) * | 2015-12-01 | 2016-02-03 | 重庆亦凡矿产品有限公司 | Method for producing light building decoration material by using industry smelting gas and solid waste slags |
| CN108033749A (en) * | 2017-11-27 | 2018-05-15 | 安徽省润乾节能建材科技股份有限公司 | A kind of preparation process of copper tail mud production aerated bricks |
| CN111646770A (en) * | 2020-05-22 | 2020-09-11 | 贵州开磷磷石膏综合利用有限公司 | Phosphogypsum-based exhaust smoke pipe for kitchen and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104860599A (en) * | 2015-05-22 | 2015-08-26 | 蚌埠营军新型墙体材料有限公司 | Preparation method of aerated brick with good waterproof performance |
| CN105060742A (en) * | 2015-07-27 | 2015-11-18 | 中国科学院武汉岩土力学研究所 | Preparation method for low-grade manganese tailing-based binding material |
| CN105294038A (en) * | 2015-12-01 | 2016-02-03 | 重庆亦凡矿产品有限公司 | Method for producing light building decoration material by using industry smelting gas and solid waste slags |
| CN108033749A (en) * | 2017-11-27 | 2018-05-15 | 安徽省润乾节能建材科技股份有限公司 | A kind of preparation process of copper tail mud production aerated bricks |
| CN111646770A (en) * | 2020-05-22 | 2020-09-11 | 贵州开磷磷石膏综合利用有限公司 | Phosphogypsum-based exhaust smoke pipe for kitchen and preparation method thereof |
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Application publication date: 20130403 |