CN101839623A - Cupola furnace for producing rock wool - Google Patents

Cupola furnace for producing rock wool Download PDF

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Publication number
CN101839623A
CN101839623A CN 201010156462 CN201010156462A CN101839623A CN 101839623 A CN101839623 A CN 101839623A CN 201010156462 CN201010156462 CN 201010156462 CN 201010156462 A CN201010156462 A CN 201010156462A CN 101839623 A CN101839623 A CN 101839623A
Authority
CN
China
Prior art keywords
gas
rock wool
cupola furnace
furnace
cupola
Prior art date
Application number
CN 201010156462
Other languages
Chinese (zh)
Inventor
胡明玉
赵春燕
彭金生
丁成平
Original Assignee
南昌大学
上海奥中实业有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 南昌大学, 上海奥中实业有限公司 filed Critical 南昌大学
Priority to CN 201010156462 priority Critical patent/CN101839623A/en
Publication of CN101839623A publication Critical patent/CN101839623A/en

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Abstract

The invention provides a cupola furnace for producing rock wool, which is characterized in that: (1) an air pipe on the lower part of the furnace body of the cupola furnace is provided with an industrial pure oxygen introducing device [4], an oxygen monitoring point [5], a control system and a gas flowmeter; and (2) a reducing zone of the cupola furnace is provided with an on-line monitoring point [2] for monitoring the content of CO gas, SO3 gas and NO2 gas and a thermocouple [3]. Since the air pipe on the lower part of the furnace body of the cupola furnace is provided with the industrial pure oxygen introducing device and the oxygen monitoring point, a certain amount of industrial pure oxygen is mixed into the cupola furnace and is taken as a combustion-supporting gas, fuels burn more fully, energy consumption can be lowered and the quality of rock wool fiber can be enhanced; and the reducing zone of the cupola furnace is provided with the on-line monitoring point for monitoring the content of CO gas, SO3 gas, NO2 gas and the like and the thermocouple, so the gas compositions of gases entering the cupola furnace can be adjusted in time and gas intake flow can be controlled according to a monitoring result, level height is adjusted appropriately, the operation of a waste gas burning system is controlled and a precondition is provided for the production of high-performance rock wool.

Description

Be used for the furnace cupola that rock wool produces
Technical field
The present invention relates to the cupola tender technology, particularly a kind of furnace cupola oxygen enrichment melting process technology that is applicable to that the high-performance rock wool produces.
Background technology
The existing domestic cupola melting that is used for rock wool production is to adopt the combustion-supporting smelting technology of hot-air, promptly uses the hot-air that obtains by furnace cupola tail gas and cold air heat exchange as combustion-supporting gas.Though this method is simple, has many shortcomings,, cause the interior programming rate of stove slow as owing to oxygen content in the air is low; Fuel combustion is insufficient, causes in the stove gas content height such as CO, thus cause that the rock wool fibers of producing is short and thick, pliability and poor flexibility.Therefore, be difficult to produce the high-performance asbestos product by this technology.
At present, along with implementing of development and national economy and national energy saving policy, the heat insulation demand with the high-performance asbestos product of building and industrial heat preservation is increasing, but the asbestos product on the market mostly is low-end product greatly, rock wool fibers is thick, crisp, and the goods weatherability is relatively poor, and intensity is low, and heat insulation property is poor, can not satisfy instructions for use.Therefore, exploitation rock wool production new technology is significant.For solving the problem of present existence, we develop this furnace cupola oxygen enrichment melting process technology.
Summary of the invention
The objective of the invention is to utilize furnace cupola under low energy consumption, to produce high-quality rock wool elongated, soft, good springiness.Help fiber folded when producing asbestos product with this rock wool, can the production intensity height, rock wool product that heat insulation property is good.
The present invention is achieved by the following technical solutions.
(1) at the airduct place of cupola body bottom industrial pure oxygen access equipment [4], oxygen monitoring point [5] and control system are set, gas flowmeter is set simultaneously.Control the addition of industrial pure oxygen according to manufacturing technique requirent, keep the combustion-supporting gas stable components, with the rock wool steady quality that guarantees to produce.
Industry pure oxygen access equipment [4] can mix a certain proportion of industrial pure oxygen by technological requirement when combustion fan provides hot blast, enter the combustion-supporting airduct of furnace cupola after the mixing, to improve the melt temperature and the burn-off rate of raw material in the furnace cupola.
Oxygen monitoring point [5] is accurately measured oxygen and is entered furnace cupola flow before, with fusing in the accurate control furnace cupola and heat exchange degree, stable furnace condition.
(2) zone of reduction at furnace cupola is provided with CO, SO 3, NO 2Deng gas content on-line monitoring point [2], O in on-line monitoring and the judgement stove 2The complete reaction degree; Simultaneously thermocouple [3] is set, the monitoring EGT at this zone of reduction.In time adjust furnace cupola air inlet gas composition, control charge flow rate according to monitoring result, the operation of control burned waste gas system.
Furnace cupola operation sequence through strictness control makes the melt of final outflow reach stable flow rate, temperature and acidity coefficient.
The present invention has the following advantages: by the airduct place in the cupola body bottom industrial pure oxygen access equipment and oxygen monitoring and control point are set, the certain amount of industrial pure oxygen is sneaked in the furnace cupola as combustion-supporting gas, make fuel combustion more abundant, not only can cut down the consumption of energy, also can improve the quality of rock wool fibers; Zone of reduction at furnace cupola is provided with CO, SO 3, NO 2Deng gas content on-line monitoring point and thermocouple, can in time adjust furnace cupola air inlet gas composition and control charge flow rate according to monitoring result, the operation of control burned waste gas system.The present invention provides precondition for production high-performance rock wool.
Description of drawings
Accompanying drawing is the schematic diagram of furnace cupola of the present invention.Wherein 1 is the gamma-rays level-sensing device, and 2 is gas on-line monitoring point, and 3 is thermocouple, and 4 for containing the oxygen and aiding combustion hot-wind inlet, and 5 is the oxygen monitoring point, and 6 are the melt-flow outlet.
The specific embodiment
The present invention will be described further by following examples.
Embodiment 1:
With basalt is the main material production rock wool fibers, and the melt temperature of raw material is about 1700 ℃.Adopt this furnace cupola oxygen enrichment melting process technology.According to the measurement result of the gas on-line monitoring system of technological requirement and furnace cupola zone of reduction, the feeding amount of determining industrial pure oxygen is 2~3% of a combustion air.The rock wool fibers average diameter of producing with this technology is 4 μ m, and length is 35mm~45mm, and pliability is good.
Embodiment 2:
With 80% basalt and 20% diabase is that raw material is produced rock wool fibers, and the melt temperature of raw material is about 1680 ℃.Adopt this furnace cupola oxygen enrichment melting process technology.According to the measurement result of the gas on-line monitoring system of technological requirement and furnace cupola zone of reduction, the feeding amount of determining industrial pure oxygen is 3~4% of a combustion air.The rock wool fibers average diameter of producing with this technology is 5 μ m, and length is 32mm~40mm, and pliability is good.
Embodiment 3: with green pyroxenite is primary raw material, and about 18% slag is an auxiliary material, produces rock wool fibers, and the melt temperature of raw material is about 1650 ℃.Adopt this furnace cupola oxygen enrichment melting process technology.According to the measurement result of the gas on-line monitoring system of technological requirement and furnace cupola zone of reduction, the feeding amount of determining industrial pure oxygen is 5% of a combustion air.The rock wool fibers average diameter of producing with this technology is 6 μ m, and length is 28mm~35mm, and pliability is good.

Claims (1)

1. one kind is used for the furnace cupola that rock wool produces, and it is characterized in that:
(1) industrial pure oxygen access equipment [4] and oxygen monitoring point [5] and control system are set at the airduct place of cupola body bottom, gas flowmeter is set simultaneously;
(2) zone of reduction at furnace cupola is provided with CO, SO 3, NO 2Gas content on-line monitoring point [2] is provided with thermocouple [3] at this zone of reduction simultaneously.
CN 201010156462 2010-04-26 2010-04-26 Cupola furnace for producing rock wool CN101839623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010156462 CN101839623A (en) 2010-04-26 2010-04-26 Cupola furnace for producing rock wool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010156462 CN101839623A (en) 2010-04-26 2010-04-26 Cupola furnace for producing rock wool

Publications (1)

Publication Number Publication Date
CN101839623A true CN101839623A (en) 2010-09-22

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Application Number Title Priority Date Filing Date
CN 201010156462 CN101839623A (en) 2010-04-26 2010-04-26 Cupola furnace for producing rock wool

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923940A (en) * 2012-11-20 2013-02-13 维克特新材料江苏有限公司 Heat source recycling method for producing rock wools
CN103776260A (en) * 2013-08-30 2014-05-07 山东泰石节能保温材料有限公司 High-yield rock wool production line

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08295526A (en) * 1995-04-26 1996-11-12 Nitto Boseki Co Ltd High-strength rock wool and its production
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
EP1944273A1 (en) * 2007-01-15 2008-07-16 Rockwool International A/S Process and apparatus for making mineral fibers
CN101305104A (en) * 2005-11-10 2008-11-12 乔治洛德方法研究和开发液化空气有限公司 Method for supersonically injecting oxygen into a furnace
US20090314035A1 (en) * 2008-06-24 2009-12-24 Thomas Niehoff Method for producing mineral wool

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08295526A (en) * 1995-04-26 1996-11-12 Nitto Boseki Co Ltd High-strength rock wool and its production
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
CN101305104A (en) * 2005-11-10 2008-11-12 乔治洛德方法研究和开发液化空气有限公司 Method for supersonically injecting oxygen into a furnace
EP1944273A1 (en) * 2007-01-15 2008-07-16 Rockwool International A/S Process and apparatus for making mineral fibers
US20090314035A1 (en) * 2008-06-24 2009-12-24 Thomas Niehoff Method for producing mineral wool

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
《新型建筑材料》 20020131 杨铧 全氧送风技术在矿棉熔炼中的应用前景探讨 , 第1期 2 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102923940A (en) * 2012-11-20 2013-02-13 维克特新材料江苏有限公司 Heat source recycling method for producing rock wools
CN103776260A (en) * 2013-08-30 2014-05-07 山东泰石节能保温材料有限公司 High-yield rock wool production line
CN103776260B (en) * 2013-08-30 2015-05-27 泰石岩棉有限公司 High-yield rock wool production line

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Open date: 20100922