CN102295467A - Method for preparing light ceramic particle from pyrite cinder - Google Patents
Method for preparing light ceramic particle from pyrite cinder Download PDFInfo
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- CN102295467A CN102295467A CN2011101635431A CN201110163543A CN102295467A CN 102295467 A CN102295467 A CN 102295467A CN 2011101635431 A CN2011101635431 A CN 2011101635431A CN 201110163543 A CN201110163543 A CN 201110163543A CN 102295467 A CN102295467 A CN 102295467A
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- pyrite cinder
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Abstract
The invention provides a method for preparing light ceramic particle from pyrite cinder. The method comprises the following steps: 1) pretreating; 2) preparing materials; 3) mixing; 4) forming; 5) firing; and 6) preparing a finished product. The light ceramic particle prepared by the preparation method has low cost and can be used for preparing light concrete, heat insulation mortar, heat insulation loose filling material and refractory concrete, and by the adoption of the method, wastes are turned into wealth.
Description
Technical field
The invention belongs to and use the preparation of sintered material refuse, relate to the method that a kind of pyrite cinder prepares light ceramic as the method for material of construction such as concrete or rostone with light ceramic.The light ceramic collection that makes is particularly useful for making light weight concrete, also can be used in other light building material.
Background technology
Pyrite cinder is to adopt sulfurous iron ore to prepare a kind of waste residue of being discharged in sulfuric acid or the sulphur process.China's ferro-sulphur ore is abundant, accounts for 10% of world's total reserves, occupies the 3rd, only the former six Pan Shui economic zone coal measures ferro-sulphur ore reserves of Chuan Nan, the northern regions of the Yunnan Province, the west of Guizhou Province just reach 6,500,000,000 tons, prospective reserves is more than 40,000,000,000 tons, but China's sulfurous iron ore many based in low-grade, average geologic grade 17.68%.The low grade pyrite routine is utilized as washing and becomes pyrite concentrate to make the gas washing in SA production raw material in China, but ecotope, industrial and agricultural production, the people's health of storing up the locality of a large amount of milltailings slags have caused serious harm, and environment such as waters are on every side caused serious pollution.1 ton of sulfuric acid of the every production of pyrite concentrate simultaneously approximately discharges 0.7 ton pyrite cinder, and is current, the millions of burning slags of the annual discharging of China to up to ten million tons, and quantity discharged is quite big, and technological breakthrough is expected in its effective utilization always.Yunnan Evergreen Tree Investment Co., Ltd. has succeeded in developing low grade pyrite direct production sulphur, sulfuric acid new technology in the usefulness with the related scientific research institutes, compare it with conventional art and do not need technologies such as ore dressing, solved the environmental stress of tailings discharging, but its slag roasting quantity discharged is bigger.This burns slag, and the iron grade is hanged down can not be used as iron-smelting raw material, produces solid sewage-treating agent and red iron oxide etc. and makes that because of demand is few slag roasting consumption is little, burns till with the mineralizer application wideless as cement auxiliary ingredients and alternative iron ore making cement.Therefore, how high efficiency, low cost, on a large scale utilize in low grade pyrite burn slag restrict especially in low grade pyrite directly utilize new technology spread to use bottleneck.
Light-weight aggregate is meant that tap density is not more than 1100 kg/m
3Light coarse aggregate and tap density be not more than 1200 kg/m
3The general name of light fine aggregate, it is mainly used to prepare light weight concrete, thermal insulation mortar, the loose stopping composition of insulation and refractory concrete etc., light aggregate is divided into natural light-weight aggregate, artificial lightweight aggregate and trade waste light-weight aggregate by the starting material source, and haydite is the main composition of artificial lightweight aggregate and solid waste light-weight aggregate, and the prepared haydite of this patent belongs to a kind of of solid waste light-weight aggregate.Natural light-weight aggregate is favored owing to exploitation is convenient, production energy consumption is little, cheap, but its foreign matter content is bigger, and finished product character fluctuation is big; The artificial lightweight aggregate quality is better, complex manufacturing, and energy consumption is high and be subjected to the restriction of raw material resources; The same artificial aggregate of solid waste light-weight aggregate production technique, but owing to consumed cheap waste, not only reduce production costs, and turn waste into wealth and obtain production application widely, thus, the solid waste haydite has very big development space.This patent is a main raw material with the pyrite cinder, mixes carbamate additives for low phosphorus gypsum and pulverized coal preparation ordinary ceramsite or mix mud to prepare high-strength ceramic granule, for a new direction has been opened up in the production of light ceramic again.
Summary of the invention
Purpose of the present invention is intended to overcome the deficient problem of raw material resources in the existing haydite production, a kind of method of utilizing the solid waste pyrite cinder to prepare light ceramic for main raw material is proposed, the light ceramic that the present invention makes, not only with low cost, turn waste into wealth, and can mass consumption burn slag, it is useless to be convenient to the place, do not have secondary to burn the slag exhaust emission, and decompose the SO that overflows by phosphogypsum
3Recyclable preparation sulfuric acid.
Content of the present invention is: 1, a kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%; Coal dust is milled to 0.075mm and tails over powder less than 10%;
Perhaps, the mud powder of pyrite cinder and oven dry all is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 12:3～8, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 4%～12% coal dust;
Perhaps, pyrite cinder accounts for 50%～70% of batching total amount, and all the other are mud;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
Perhaps, pyrite cinder is mixed stirring with mud, make compound after making its thorough mixing evenly;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6～8 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1200～1250 ℃ insulation 20～35min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make finished product.
Pyrite cinder with carry out original position with coal dust again after phosphogypsum mixes and mix.
It is big volume component to be divided into some equal portions mix with little volume component successively that original position is mixed, and is about to pyrite cinder and is divided into 2～6 parts, adds in the coal dust successively and mixes, and every mixing churning time that adds portion is 1～5 minute.
The light ceramic that adopts content of the present invention and the described method of the foregoing description to make gathers materials, and mixes material of construction such as can preparing light weight concrete or thermal insulation mortar with gelling material, water, admixture etc., and its volume is decided with demand.
Compared with prior art, the present invention has following characteristics and beneficial effect:
(1) used starting material pyrite slag, phosphogypsum, the mud of the present invention is waste residue, it is made full use of satisfy national energy-saving and emission-reduction requirement.
(2) the present invention utilizes industrial residue to be raw material, and is more cheap than the leca cost, and meets state guarantee arable land needs, but and mass consumption burning slag, burn the slag volume more than 50%.
(3) the used subsidiary material phosphogypsum of the present invention is all industrial residue, the recyclable preparation sulfuric acid of the sulphur trioxide of overflowing in the haydite.
Embodiment
Embodiment given below is so that the invention will be further described; but can not be interpreted as it is limiting the scope of the invention; the person skilled in art to some nonessential improvement and adjustment that the present invention makes, still belongs to protection scope of the present invention according to the content of the invention described above.
Embodiment 1:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%, coal dust is milled to 0.075mm and tails over powder less than 10%; The technical analysis of coal dust: fugitive constituent is 17.98%, and fixed carbon is 58.54%, moisture is 3.5%, and ash content is 19.98%; The back together; The main composition and the mass percent of pyrite cinder are: SiO
231.84%, Al
2O
327.86%, Fe
2O
329.80%, CaO 4.18%; The back together; The main chemical constitution and the mass percent of phosphogypsum are: SO
349.36%, CaO 36.15%, SiO
210.63%; The back together;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 4:1, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 12% coal dust;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1200 ℃ insulation 20min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make the haydite finished product.
The haydite performance test is as follows:
Tap density is 920kg/m
3, water-intake rate is 7.2%, apparent density is 1650kg/m
3, cylindrical compress strength is 5.6MPa, sulphur content 0.40%, and all the other indexs are all qualified.
Embodiment 2:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%, coal dust is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 4:1, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 12% coal dust;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1250 ℃ insulation 20min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make the haydite finished product.
The haydite performance test is as follows:
Tap density is 860kg/m
3, water-intake rate is 10.0%, apparent density is 1530kg/m
3, cylindrical compress strength is 5.1MPa, sulphur content 0.32%, and all the other indexs are all qualified.
Embodiment 3:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%, coal dust is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 4:1, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 4% coal dust;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1250 ℃ insulation 20min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make the haydite finished product.
The haydite performance test is as follows:
Tap density is 810kg/m
3, water-intake rate is 4.4%, apparent density is 1390kg/m
3, cylindrical compress strength is 3.4MPa, sulphur content 0.27%, and all the other indexs are all qualified.
Embodiment 4:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%, coal dust is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 3:2, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 12% coal dust;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1250 ℃ insulation 20min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make the haydite finished product.
The haydite performance test is as follows:
Tap density is 890kg/m
3, water-intake rate is 19.4%, apparent density is 1500kg/m
3, cylindrical compress strength is 4.5MPa, sulphur content is (with SO
3Meter) 0.52%, all the other indexs are all qualified.
Embodiment 5:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%, coal dust is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 3:2, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 8% coal dust;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1250 ℃ insulation 20min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make the haydite finished product.
The haydite performance test is as follows:
Tap density is 900kg/m
3, water-intake rate is 19.9%, apparent density is 1470kg/m
3, cylindrical compress strength is 3.6MPa, sulphur content is (with SO
3Meter) 0.67%, all the other indexs are all qualified.
Embodiment 6:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
In the content of the present invention: described step a, step b and step c can replace with:
A, pre-treatment: the mud powder of pyrite cinder and oven dry all is milled to 0.075mm tails over powder less than 10%;
The main chemical constitution and the mass percent of mud are: CaO 6.03%, SiO
263.72%, Al
2O
310.67%, Fe
2O
35.12%, loss on ignition 9.60%; The back together;
B, batching: with pyrite cinder and mud is the ratio amount of getting of 1:1 with the mass ratio;
C, mixing: pyrite cinder is mixed stirring with mud, make compound after making its thorough mixing evenly;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6～8 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1200～1200 ℃ insulation 20～35min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make finished product.
The haydite performance test is as follows:
Tap density is 1190kg/m
3, water-intake rate is 7.9%, and cylindrical compress strength is 10.2MPa, and all the other indexs are all qualified.
Embodiment 7:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
In the content of the present invention: described step a, step b and step c can replace with:
A, pre-treatment: the mud powder of pyrite cinder and oven dry all is milled to 0.075mm tails over powder less than 10%;
B, batching: with pyrite cinder and mud is the ratio amount of getting of 3:2 with the mass ratio;
C, mixing: pyrite cinder is mixed stirring with mud, make compound after making its thorough mixing evenly;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6～8 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1220 ℃ insulation 20～35min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make finished product.
The haydite performance test is as follows:
Tap density is 990kg/m
3, water-intake rate is 4.0%, and cylindrical compress strength is 14.4MPa, and all the other indexs are all qualified.
Embodiment 8:
A kind of pyrite cinder prepares the method for light ceramic, comprises the following steps:
In the content of the present invention: described step a, step b and step c can replace with:
A, pre-treatment: the mud powder of pyrite cinder and oven dry all is milled to 0.075mm tails over powder less than 10%;
B, batching: with pyrite cinder and mud is the ratio amount of getting of 7:3 with the mass ratio;
C, mixing: pyrite cinder is mixed stirring with mud, make compound after making its thorough mixing evenly;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6～8 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1220 ℃ insulation 20～35min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make finished product.
The haydite performance test is as follows:
Tap density is 1120kg/m
3, water-intake rate is 5.0%, and cylindrical compress strength is 11.5MPa, and all the other indexs are all qualified.
In the foregoing description, the main chemical constitution of described pyrite cinder and mass percent also can not be subjected to above-mentioned restriction.
The light ceramic that adopts content of the present invention and the described method of the foregoing description to make mixes material of construction such as can preparing light weight concrete or thermal insulation mortar with gelling material, water, admixture etc., and its volume is decided with demand.
The invention is not restricted to the foregoing description, content of the present invention is described all can implement and have described good result.
Claims (1)
1. a pyrite cinder prepares the method for light ceramic, it is characterized in that, comprises the following steps:
A, pre-treatment: pyrite cinder and phosphogypsum are milled to 0.075mm respectively tail over powder less than 5%; Coal dust is milled to 0.075mm and tails over powder less than 10%;
Perhaps, the mud powder of pyrite cinder and oven dry all is milled to 0.075mm and tails over powder less than 10%;
B, batching: pyrite cinder: the phosphogypsum mass ratio is 12:3～8, and mixing mass ratio outward according to the mixture of pyrite cinder and phosphogypsum is 4%～12% coal dust;
Perhaps, pyrite cinder accounts for 50%～70% of batching total amount, and all the other are mud;
C, mixing: pyrite cinder is mixed stirring with phosphogypsum, make its thorough mixing evenly after, make compound after mixing the coal dust uniform mixing again;
Perhaps, pyrite cinder is mixed stirring with mud, make compound after making its thorough mixing evenly;
D, moulding: with compound admixture amount of water, can hand pinch agglomeratingly to compound, adopt manual or mechanical balling-up, the balling-up particle diameter be at 10～15mm;
E, sintering technology: the moulding pellet was dried 2 hours at 105 ℃, temperature rise rate with 6～8 ℃/min rises to 400 degree then, changes over to immediately behind the insulation 20min in the moderate oven that temperature is 900 degree, with the speed of 5 ℃/min, be rapidly heated to 1200～1250 ℃ insulation 20～35min;
F, finished product: after baking, be cooled to 800～900 ℃ and take out postcooling, make finished product.
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|---|---|---|---|
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102659329A (en) * | 2012-04-27 | 2012-09-12 | 西南科技大学 | Preparation method for quick hardening early strength hydraulic cementing material |
| CN105272340A (en) * | 2015-10-30 | 2016-01-27 | 武汉科技大学 | Method of preparing siliceous and calcareous porous ceramsite and sulphuric acid by decomposing phosphogypsum |
| CN109438082A (en) * | 2018-12-26 | 2019-03-08 | 蓝星（成都）新材料有限公司 | The preparation method of calcium sulphate dihydrate suitable for soil |
| CN111282964A (en) * | 2020-03-03 | 2020-06-16 | 杨朋杰 | Device for preparing ceramsite sand by treating garbage |
| CN111434638A (en) * | 2019-01-14 | 2020-07-21 | 吉林市三路陶业有限公司 | Argil sintering infiltration brick |
| CN113135679A (en) * | 2021-04-16 | 2021-07-20 | 成都中弘轨道交通环保产业股份有限公司 | Composition formula for firing ceramsite by using nepheline tailings and preparation method thereof |
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| CN101050100A (en) * | 2007-04-16 | 2007-10-10 | 李兴 | Technique for producing production of ceramic aggregate from clinker burnt from household garbage and municipal sludge |
| CN101525219A (en) * | 2009-04-06 | 2009-09-09 | 河北理工大学 | Solid waste porcelain granule in iron ore mine and ore dressing plant and preparation method thereof |
| CN101817671A (en) * | 2010-02-09 | 2010-09-01 | 广州建材企业集团有限公司 | Method for burning fly ash by utilizing refuse in ceramsite production |
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2011
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101050100A (en) * | 2007-04-16 | 2007-10-10 | 李兴 | Technique for producing production of ceramic aggregate from clinker burnt from household garbage and municipal sludge |
| CN101525219A (en) * | 2009-04-06 | 2009-09-09 | 河北理工大学 | Solid waste porcelain granule in iron ore mine and ore dressing plant and preparation method thereof |
| CN101817671A (en) * | 2010-02-09 | 2010-09-01 | 广州建材企业集团有限公司 | Method for burning fly ash by utilizing refuse in ceramsite production |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102659329A (en) * | 2012-04-27 | 2012-09-12 | 西南科技大学 | Preparation method for quick hardening early strength hydraulic cementing material |
| CN105272340A (en) * | 2015-10-30 | 2016-01-27 | 武汉科技大学 | Method of preparing siliceous and calcareous porous ceramsite and sulphuric acid by decomposing phosphogypsum |
| CN109438082A (en) * | 2018-12-26 | 2019-03-08 | 蓝星（成都）新材料有限公司 | The preparation method of calcium sulphate dihydrate suitable for soil |
| CN111434638A (en) * | 2019-01-14 | 2020-07-21 | 吉林市三路陶业有限公司 | Argil sintering infiltration brick |
| CN111282964A (en) * | 2020-03-03 | 2020-06-16 | 杨朋杰 | Device for preparing ceramsite sand by treating garbage |
| CN113135679A (en) * | 2021-04-16 | 2021-07-20 | 成都中弘轨道交通环保产业股份有限公司 | Composition formula for firing ceramsite by using nepheline tailings and preparation method thereof |
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|---|---|
| CN102295467B (en) | 2013-06-19 |
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