CN102838274A - Method for producing solidified slag rock wool by smoke afterheat and slag of cupola furnace - Google Patents

Method for producing solidified slag rock wool by smoke afterheat and slag of cupola furnace Download PDF

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Publication number
CN102838274A
CN102838274A CN201110185561XA CN201110185561A CN102838274A CN 102838274 A CN102838274 A CN 102838274A CN 201110185561X A CN201110185561X A CN 201110185561XA CN 201110185561 A CN201110185561 A CN 201110185561A CN 102838274 A CN102838274 A CN 102838274A
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China
Prior art keywords
slag
rock wool
curing
furnace
cupola furnace
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Application number
CN201110185561XA
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Chinese (zh)
Inventor
于仁先
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青岛青力环保设备有限公司
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Priority to CN201110185561XA priority Critical patent/CN102838274A/en
Publication of CN102838274A publication Critical patent/CN102838274A/en

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Abstract

The invention discloses a method for producing solidified slag rock wool by smoke afterheat and slag of a cupola furnace. The method comprises the following steps of: (1) melting and forming melting slag by a slag manufacturing cupola furnace; (2) entering high-temperature smoke generated by a cupola furnace combustion chamber into an air heat exchanger from hot air for heat exchange so as to obtain hot air of 350-550 DEG C; and (3) preparing slag rock wool via a centrifugal spray machine after the melting slag generated before rock wool is produced flows out of the furnace, uniformly entering obtained hot air into a curing chamber after being purified by a dust collector, heating, curing and molding the slag rock wool, and preparing a slag rock wool product from the slag rock wool by spraying, paving, heating, curing, rolling and cutting procedures. The method disclosed by the invention is good in processing property, energy-saving and emission-reducing, low in cost, high in investment yield, and significant in social benefit and economic benefit; the slag is utilized by productization; the afterheat is utilized; the resource is comprehensively utilized; and the consumption is reduced, and the environment is protection. The method can be widely applied to the rock wool production industry.

Description

A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool
Technical field the present invention relates to a kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool, can be widely used in the rock wool manufacturing.
The existing cupola slag of background technology is taken as waste and loses, and the high-temperature flue gas heat wastes and contaminate environment.The method use coke of existing production rock wool is many, efficient is low, energy consumption is high, cost is high.
Summary of the invention the object of the present invention is to provide that a kind of use characteristics is good, slag commercialization utilization, UTILIZATION OF VESIDUAL HEAT IN, comprehensive utilization of resources, energy-saving and emission-reduction, consumption reduction, cost is low, rate of return on investment is high, a kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of environment protection, social benefit and remarkable in economical benefits.
In order to achieve the above object, a kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, its special character is, comprises the steps:
(1) slag manufacturing
The low-quality furnace charge is put into overhead type external hot air cupola melting, flow out the suitable slag of basicity, through dregs-separating device and the shunting of iron liquid, but the melting furnace slag of formation comprehensive utilization of resources;
(2) the hot blast air generates
The cupola furnace combustion chamber produces 900 ℃~950 ℃ high-temperature flue gas, and the high-temperature flue gas waste heat obtains 350 ℃~550 ℃ hot blast air after getting into the air heat exchanger heat exchange;
(3) rock wool is made
(3.1) after the melting furnace slag of aforementioned generation flows out in the stove, process the slag rock wool through centrifugal fibre jet machine,
(3.2) the hot blast air of aforementioned 350 ℃ of obtaining~550 ℃ after purifying through fly-ash separator, is sent into the hot blast distribution piping that is arranged on slag rock wool curing room bottom through the arm that leaks informaton, and evenly gets in the curing room, with the moulding that is heating and curing of slag rock wool;
(3.3) the slag rock wool through spray glue, lay, be heating and curing, pressure rolling, cutting action, process slag rock wool product.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, its principle of work is: the high temperature furnace slag of cupola melting separates through fecal iron separator with molten iron, and effusive molten iron is processed foundry goods.Isolated high temperature furnace slag spontaneous current gets into roll-type down and blows cotton machine; Rotate each other through blowing the cotton machine Centrifugal rolling,, blow out filament to slag in the back of Centrifugal rolling with gas blower simultaneously the slag extruding; Cotton through collection again, pendulum is cotton, cloth is cotton, after the curing, cutting, packaging process, process the slag asbestos product.
The present invention is a kind of to utilize the be heating and curing method of slag rock wool of cupola furnace hot blast waste heat, and waste heat is discharged the back from curing room and got into waste heat boiler, after heat exchange, can be used as the domestic hot-water.The flue gas of discharging from waste heat boiler gets into dust-removal system, through entering atmosphere after the purifying treatment once more.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention; It is a kind of be heating and curing method of slag rock wool of cupola furnace hot blast waste heat of utilizing; Elasticity after utilizing pressure transmitter with the pressure rolling of machine testing slag rock wool, and with the process goal value relatively, in order to the control hot air flow.When elasticity was higher than target value after the pressure rolling of slag rock wool, the pressure transmitter instruction utilized temperature measurer to detect the preceding slag rock wool temperature of pressure rolling simultaneously, as the foundation of confirming and revise the technique initialization temperature.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention; Exhanst gas outlet at air heat exchanger is provided with cold blast valve and valve; The temperature data of curing oven is sent to the watch-keeping cubicle by TP; Operate according to the Temperature numerical of setting in the watch-keeping cubicle: when funnel temperature was higher than design temperature, temperature controller sent and strengthens the instruction of gate valve aperture, reduced the instruction of gate valve aperture otherwise send.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, adopting the steel desulfurization slag is furnace charge, when the alkalescence of slag is not suitable for, adopts and adds the basicity that the silicon-dioxide mineral change slag in the stove.Through regulating the duty parameter and the fuel ratio of cupola furnace, make the composition of its slag meet slag rock wool one-tenth sliver spare, liquid slag is directly processed the slag rock wool.
The present invention is a kind of to utilize cupola furnace fume afterheat and slag production to solidify the method for slag rock wool, is the method for the waste heat production curing slag rock wool that produces of a kind of blast furnace scum that utilizes cupola furnace hot blast fusing 30% above iron-holder.Flow out the slag of cupola furnace,, get into slag resource utilization, commercialization treatment process link, realize energy-saving and emission-reduction, comprehensive utilization of resources through dregs-separating device and the shunting of iron liquid.The depleted slag of making over obtains comprehensive utilization, and utilization of waste material is turned waste into wealth.Simultaneously, the heat energy of the high temperature furnace slag of fusing also can obtain recycling, and promptly the high temperature furnace slag UTILIZATION OF VESIDUAL HEAT IN has realized the recycling treatment of waste and the recycling of commercialization.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention; The heat required with the prior art curing oven obtained to compare through burning coal gas or coal by gas furnace; The high-temperature slag that utilizes the cupola furnace discharge is as the raw material of producing the slag rock wool; The employing directly cotton technology of system of coming out of the stove is not separately to rock wool raw material heat fused, but made full use of the waste residue that cupola furnace discharges and the heat energy of flue gas; Raw material, heat and melting process in the cotton technological process of original system have been saved; Save expense and the trucking costs of buying gas furnace, slag, avoided slag to throw aside the pollution to environment, thus the purpose that reaches comprehensive utilization of waste materials, energy-saving and emission-reduction, reduces cost.The present invention's heating energy source that economizes in raw materials in a large number, rate of return on investment is high, has bigger social benefit and application value widely, remarkable in economical benefits.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention; All raw material costs and all fuel costs in the modern mineral wool production have been saved; The tall and big slag stove and the factory building of high span have been saved; Its facility investment expense be equal scale traditional mineral wool factory 2/3 to 1/2, the cost of slag rock wool product per ton is reduced to 35%~40% of existing production technique.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention is the past directly to be discharged the fusing slag by cupola furnace ironmaking to scoriaceous " secondary fusion " replace, and has satisfied the continuity that rock wool produces.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention is effectively utilized slag liquid heat energy, fume afterheat and raw material, is used for slag wool production; Economize on resources; Reduce environmental pollution, implement the requirement of national cleaner production, investment cost is lower; Technology is reliable, and the production economic benefit is obvious.
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention can reduce the lime-ash discharging that produces in the 70% above cupola melting process, and the fume emission dust is reduced to approximate zero, the NO of discharging xReduce by 97%, SO 2Reduce by 90%, the rock wool fibers that makes can further be processed warming plate, imitation wood's plate, energy-saving wall board etc., therefore has bigger social benefit and economic benefit.
In sum, a kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, use characteristics is good, and the slag commercialization utilizes; UTILIZATION OF VESIDUAL HEAT IN, comprehensive utilization of resources, energy-saving and emission-reduction, consumption reduction; Cost is low, and rate of return on investment is high, environment protection, social benefit and remarkable in economical benefits.
Embodiment
Embodiment 1:
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, its special character is, comprises the steps:
(1) slag manufacturing
The low-quality furnace charge is put into overhead type external hot air cupola melting, flow out the suitable slag of basicity, through dregs-separating device and the shunting of iron liquid, but the melting furnace slag of formation comprehensive utilization of resources;
(2) the hot blast air generates
The cupola furnace combustion chamber produces 900 ℃ high-temperature flue gas, and the high-temperature flue gas waste heat obtains 350 ℃ hot blast air after getting into the air heat exchanger heat exchange;
(3) rock wool is made
(3.1) after the melting furnace slag of aforementioned generation flows out in the stove, process the slag rock wool through centrifugal fibre jet machine,
(3.2) aforementioned 350 ℃ the hot blast air that obtains after purifying through fly-ash separator, is sent into the hot blast distribution piping that is arranged on slag rock wool curing room bottom through the arm that leaks informaton, and evenly gets in the curing room, with the moulding that is heating and curing of slag rock wool;
(3.3) the slag rock wool through spray glue, lay, be heating and curing, pressure rolling, cutting action, process slag rock wool product.
Embodiment 2:
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, its special character is, comprises the steps:
(1) slag manufacturing
The low-quality furnace charge is put into overhead type external hot air cupola melting, flow out the suitable slag of basicity, through dregs-separating device and the shunting of iron liquid, but the melting furnace slag of formation comprehensive utilization of resources;
(2) the hot blast air generates
The cupola furnace combustion chamber produces 950 ℃ high-temperature flue gas, and the high-temperature flue gas waste heat obtains 550 ℃ hot blast air after getting into the air heat exchanger heat exchange;
(3) rock wool is made
(3.1) after the melting furnace slag of aforementioned generation flows out in the stove, process the slag rock wool through centrifugal fibre jet machine,
(3.2) aforementioned 550 ℃ the hot blast air that obtains after purifying through fly-ash separator, is sent into the hot blast distribution piping that is arranged on slag rock wool curing room bottom through the arm that leaks informaton, and evenly gets in the curing room, with the moulding that is heating and curing of slag rock wool;
(3.3) the slag rock wool through spray glue, lay, be heating and curing, pressure rolling, cutting action, process slag rock wool product.
Embodiment 3:
A kind of method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool of the present invention, its special character is, comprises the steps:
(1) slag manufacturing
The low-quality furnace charge is put into overhead type external hot air cupola melting, flow out the suitable slag of basicity, through dregs-separating device and the shunting of iron liquid, but the melting furnace slag of formation comprehensive utilization of resources;
(2) the hot blast air generates
The cupola furnace combustion chamber produces 925 ℃ high-temperature flue gas, and the high-temperature flue gas waste heat obtains 450 ℃ hot blast air after getting into the air heat exchanger heat exchange;
(3) rock wool is made
(3.1) after the melting furnace slag of aforementioned generation flows out in the stove, process the slag rock wool through centrifugal fibre jet machine,
(3.2) aforementioned 450 ℃ the hot blast air that obtains after purifying through fly-ash separator, is sent into the hot blast distribution piping that is arranged on slag rock wool curing room bottom through the arm that leaks informaton, and evenly gets in the curing room, with the moulding that is heating and curing of slag rock wool;
(3.3) the slag rock wool through spray glue, lay, be heating and curing, pressure rolling, cutting action, process slag rock wool product.

Claims (1)

1. a method of utilizing cupola furnace fume afterheat and slag production to solidify the slag rock wool is characterized in that, comprises the steps:
(1) slag manufacturing
The low-quality furnace charge is put into overhead type external hot air cupola melting, flow out the suitable slag of basicity, through dregs-separating device and the shunting of iron liquid, but the melting furnace slag of formation comprehensive utilization of resources;
(2) the hot blast air generates
The cupola furnace combustion chamber produces 900 ℃~950 ℃ high-temperature flue gas, and the high-temperature flue gas waste heat obtains 350 ℃~550 ℃ hot blast air after getting into the air heat exchanger heat exchange;
(3) rock wool is made
(3.1) after the melting furnace slag of aforementioned generation flows out in the stove, process the slag rock wool through centrifugal fibre jet machine,
(3.2) the hot blast air of aforementioned 350 ℃ of obtaining~550 ℃ after purifying through fly-ash separator, is sent into the hot blast distribution piping that is arranged on slag rock wool curing room bottom through the arm that leaks informaton, and evenly gets in the curing room, with the moulding that is heating and curing of slag rock wool;
(3.3) the slag rock wool through spray glue, lay, be heating and curing, pressure rolling, cutting action, process slag rock wool product.
CN201110185561XA 2011-06-23 2011-06-23 Method for producing solidified slag rock wool by smoke afterheat and slag of cupola furnace CN102838274A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103145328A (en) * 2013-03-13 2013-06-12 青岛青力环保设备有限公司 Method for comprehensively utilizing basalt blast furnace slag in preparation of rock wool board
CN105174711A (en) * 2015-09-14 2015-12-23 湖北铸邦环保科技材料有限公司 Production method of mineral wool imitated wood slat product

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0624787A (en) * 1992-06-30 1994-02-01 Kawasaki Steel Corp Apparatus for pouring blast furnace slag for production of rock wool
CN1511797A (en) * 2002-12-31 2004-07-14 北新建材(集团)有限公司 Process for producing mineral wool granular cotton and its hot air system
CN101531454A (en) * 2009-04-17 2009-09-16 杨铧 A mineral wool boiling melting method of directly using grainy waste slag and coal
CN101891378A (en) * 2010-06-29 2010-11-24 北京北科新锐科技发展有限责任公司 Equipment and method for producing slag wool by utilizing ironmaking slag
CN102031318A (en) * 2010-11-23 2011-04-27 于仁先 Comprehensive utilization method of cupola

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0624787A (en) * 1992-06-30 1994-02-01 Kawasaki Steel Corp Apparatus for pouring blast furnace slag for production of rock wool
CN1511797A (en) * 2002-12-31 2004-07-14 北新建材(集团)有限公司 Process for producing mineral wool granular cotton and its hot air system
CN101531454A (en) * 2009-04-17 2009-09-16 杨铧 A mineral wool boiling melting method of directly using grainy waste slag and coal
CN101891378A (en) * 2010-06-29 2010-11-24 北京北科新锐科技发展有限责任公司 Equipment and method for producing slag wool by utilizing ironmaking slag
CN102031318A (en) * 2010-11-23 2011-04-27 于仁先 Comprehensive utilization method of cupola

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103145328A (en) * 2013-03-13 2013-06-12 青岛青力环保设备有限公司 Method for comprehensively utilizing basalt blast furnace slag in preparation of rock wool board
CN103145328B (en) * 2013-03-13 2016-03-16 青岛青力环保设备有限公司 A kind of method of basalt blast furnace slag in preparation of rock wool board comprehensive utilization
CN105174711A (en) * 2015-09-14 2015-12-23 湖北铸邦环保科技材料有限公司 Production method of mineral wool imitated wood slat product

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Application publication date: 20121226

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