KR100187428B1 - Process for the preparation of lightweight plate material - Google Patents

Process for the preparation of lightweight plate material Download PDF

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KR100187428B1
KR100187428B1 KR1019960061481A KR19960061481A KR100187428B1 KR 100187428 B1 KR100187428 B1 KR 100187428B1 KR 1019960061481 A KR1019960061481 A KR 1019960061481A KR 19960061481 A KR19960061481 A KR 19960061481A KR 100187428 B1 KR100187428 B1 KR 100187428B1
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temperature
per minute
raised
insulation
granite
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KR1019960061481A
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KR19980043567A (en
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김치권
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강필종
한국자원연구소
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/265—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor pressure being applied on the slip in the filled mould or on the moulded article in the mould, e.g. pneumatically, by compressing slip in a closed mould
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
    • C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6562—Heating rate

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

석재 가공단지에서 화강석 원석을 일정한 두께로 절삭한 후 표면을 연마하여 건축재용 화강석 판재를 생산하는 공정에서 발생하는 폐기물인 석분 슬러지를 수거하여 여과, 건조한 석분에 구상형인 불포화 지방산, 메칠 셀루로즈(Methyl Cellulose) 또는 에칠 셀루로즈(Ethyl Cellulose)를 첨가, 혼합하는 제 1 공정, 이 혼합물을 철제 성형틀에 넣어 일정한 압력으로 가압, 성형하여 판재화하는 제 2 공정, 상기 성형물을 전기로에 장입하고 전기로의 온도를 분당 10℃ 속도로 승온하여 400℃에 도달하면 전기로 내부에 공기를 일정한 속도로 주입하면서 1차 소성하여 첨가한 유기물을 분해시켜 기공을 형성시키는데 제 3 공정과 이어서 온도를 분당 20℃ 속도로 승온하여 1,000℃에 도달하면 2차 소성하는 것이다.In the stone processing complex, the granite is cut to a certain thickness, and then the surface is polished to collect stone sludge, which is a waste produced in the production of granite sheet for building materials, and to be filtered and dried to form spherical unsaturated fatty acid and methyl cellulose. The first step of adding and mixing Cellulose or Ethyl Cellulose, the second step of putting the mixture into an iron mold and pressurizing and molding it at a constant pressure, and charging the molded product into an electric furnace and When the temperature is raised at a rate of 10 ° C. per minute and reaches 400 ° C., air is injected into the electric furnace at a constant rate to decompose the organic material added by primary firing to form pores. The third step is followed by a temperature of 20 ° C. per minute. When the temperature is raised to 1,000 ° C., the second firing is performed.

Description

건축재용 단열 및 차음용 경량판재 제조방법Manufacturing method of lightweight plate for insulation and sound insulation for building materials

본 발명은 국제분류 E04c에 해당하는 건축재용 단열 및 차음용 경량판재에 관한 것으로, 특히 국내 석재 가공공장에서 배출되고 있는 석분 슬러지를 활용한 단열 및 차음용 경량판재 제조방법에 관한 것이다.The present invention relates to a lightweight insulating sheet for insulation and sound insulation for building materials corresponding to the international classification E04c, and more particularly to a method for manufacturing a lightweight insulating sheet for insulation and sound insulation using stone sludge discharged from the domestic stone processing plant.

채석장에서 원석을 채석하여 전국에 산재해 있는 각 석재 가공공장에서 절삭, 표면연마공정을 거쳐 최종 제품인 건축재용 석판재를 생산하고 있으나 이 과정에서 다량의 석분 슬러지가 발생하고 있다.In the quarry, the raw stone is quarryed, and each stone processing factory scattered throughout the country produces cutting and surface grinding processes to produce the final product slab for building materials, but a lot of stone powder sludge is generated in this process.

배출된 석분 슬러지는 방치 또는 매립되고 있어 환경오염을 유발하고 있거나 폐자원화 되고있는 실정이다.The discharged stone powder sludge is left untreated or landfilled, causing environmental pollution or recycling into waste resources.

따라서 본 발명은 석분 슬러지를 재활용하여 2차 제품인 단열 및 차음용 경량판재를 제조하여 건축재로 사용하므로 환경오염유발 물질의 최소화는 물론 폐자원 활용의 극대화를 도모한 기술이다.Therefore, the present invention is a technology that aims to maximize the utilization of waste resources as well as minimizing environmental pollution-causing materials by manufacturing the lightweight product for insulation and sound insulation as secondary materials by recycling the stone powder sludge.

한편, 최근 건축물의 고층화 추세에 맞추어 건축재료의 경량화가 요구되고 있으며 또한 주거환경에 대한 입주자의 질적인 요구 수준이 높아지면서 단열 및 소음의 차단은 주거환경의 중요한 평가인자로 대두되고 있는바 본 발명에 의하여 제조된 단열 및 차음용 경량판재는 기존의 시멘트 벽돌과는 달리 벽돌내부에 크기가 균일한 기공이 형성되어 있기때문에 단열 및 소음에 대한 차단 효과가 우수할 뿐만 아니라 무게가 기존의 시멘트 판재의 40 ~ 50% 정도 경량화되었기 때문에 시공이 용이하고 조적 공사비를 절감시킬 수 있는 잇점이 있다.On the other hand, in accordance with the recent trend of higher buildings, lighter weight of building materials is required, and as the quality requirements of tenants for the residential environment increase, insulation and noise blocking have emerged as important evaluation factors for the residential environment. Unlike the existing cement bricks, the lightweight plate for thermal insulation and sound insulation produced by is not only excellent in insulation and noise blocking effect, but also has a weight that is superior to that of conventional cement bricks. As it is reduced by 40 ~ 50%, it is easy to construct and can reduce masonry construction cost.

일반적으로 단열 및 차음용 경량벽돌의 제조방법으로는 진주암, 혈암 또는 화산암을 0.5 ~ 1mm 크기로 분쇄하여 온도가 1,200℃ 이상으로 유지된 고온로에 일정속도로 투입하여 순간적인 열충격에 의하여 팽창시킨 후 이를 성형틀에 넣어 가압, 성형하여 제조하는 방법과 규석분말, 생석회 및 시멘트에 물을 가하여 슬러리(Slurry) 상태로 만든 후 카복실메칠 셀루로즈(Carboxylmethyl Cellulose)를 물에 용해한 수용액과 알루미늄 분말을 첨가하여 분산시킨 혼합물을 성형틀에 투여하여 발포반응에 의한 기공을 형성시키고 계속하여 성형물을 고화시켜 제조하는 방법이 있다.In general, as a method of manufacturing light insulation bricks for insulation and sound insulation, pearl rock, shale, or volcanic rock is crushed to a size of 0.5 to 1 mm, and then expanded to a high temperature furnace at a temperature of 1,200 ° C. It is made by pressing and molding into a mold and making it into slurry by adding water to silica powder, quicklime, and cement, and then adding aqueous solution and aluminum powder in which carboxyl methyl cellulose is dissolved in water. There is a method of producing the mixture by administering the dispersed mixture to the mold to form pores by the foaming reaction, and then solidifying the molding.

그러나 상기 방법중 전자에 의한 방법은 원료로 사용되는 진주암, 혈암 및 화산암은 국내에 부존 자원이 없어 외국에서 수입하여야 하므로 원료의 확보가 용이하지 않고 세포비용이 높은 단점이 있으며, 후자에 의한 방법은 판재 내부에 기공을 형성하기 위한 발포반응 속도의 조절이 불가능하기 때문에 기공의 크기가 균일하지 못하고 이 과정에서 성형품에 균열이 발생하여 제품의 강도 저하를 초래한다.However, in the former method, pearlite, shale, and volcanic rock, which are used as raw materials, need to be imported from foreign countries because they do not have domestic resources. Since it is impossible to control the rate of foaming reaction to form pores in the plate, the size of the pores is not uniform, and cracks occur in the molded product in this process, leading to a decrease in strength of the product.

따라서 본 발명에서는 상기와 같은 문제점을 개선하고 국내 석재 가공공장에서 발생하고 있는 폐기물을 원료로 사용하므로 원료의 확보가 용이하고 폐자원의 재활용을 극대화시켜 단열 및 차음용 경량벽돌을 제조하여 건축재로 사용하는데 그 목적이 있다.Therefore, the present invention improves the above problems and uses wastes generated in domestic stone processing plants as raw materials, thus making it easy to secure raw materials and maximizing the recycling of waste resources to produce lightweight bricks for insulation and sound insulation, which are used as building materials. Its purpose is to.

도 1은 본 발명의 석분 슬러지를 원료로 사용한 단열 및 차음용 경량벽돌의 제조공정도1 is a manufacturing process diagram of the light-weight brick for insulation and sound insulation using the stone sludge of the present invention as a raw material

이하 도 1을 통하여 본 발명을 설명한다.Hereinafter, the present invention will be described with reference to FIG. 1.

본 발명은 국내 황등 석재 가공단지에서 화강석 원석을 일정한 두께로 절삭한 후 표면을 연마하여 건축재용 화강석 판재를 생산하는 공정에서 발생하는 석분 슬러지를 수거하여 여과, 건조한 석분에 구상형인 불포화 지방산, 메칠 셀루로즈(Methyl Cellulose) 또는 에칠 셀루로즈(Ethyl Cellulose)를 첨가, 혼합한 후 성형틀에 넣어 가압, 성형하여 판재화하고 성형물을 전기로에 장입하고 이어서 전기로의 온도를 분당 10℃ 속도로 승온하여 400℃에 도달하면 전기로 내부에 공기를 일정한 속도로 주입하면서 1차 소성하여 첨가한 유기물을 분해시켜 기공을 형성시키고 계속해서 온도를 분당 20℃ 속도로 승온하여 1,000℃에 도달하면 2차 소성하여 단열 및 차음용 경량판재를 제조한다.The present invention is to collect the stone sludge produced in the process of producing granite plate for building materials by cutting the granite ore to a certain thickness in the domestic yellow stone processing complex, and then filtered, dried fatty powder spherical unsaturated fatty acid, methyl cellulose Add and mix Rose (Methyl Cellulose) or Ethyl Cellulose, put it into a mold, pressurize and mold it to make a plate, load the molding into an electric furnace, and then raise the temperature of the electric furnace at a rate of 10 ° C. per minute to 400 ° C. When it reaches to the inside of the furnace, the air is injected into the furnace at a constant rate to decompose the added organic matter to form pores. Manufacture light insulation boards for sound insulation.

본 발명이 종래 방법과 근본적으로 상이한 것은 단열 및 차음용 경량판재 제조시 원하는 입자크기의 입도가 균일한 불포화 지방산, 메칠 셀루로즈(Methyl Cellulose) 또는 에칠 셀루로즈(Ethyl Cellulose)를 선정하여 첨가하므로 내부에 형서되는 기공의 크기 및 기공율을 임의대로 조절할 수 있기 때문에 종래의 방법으로 제조한 것보다 우수한 단열 및 차음효과는 물론 경량화율이 향상된 건축재용 판재를 제조할 수 있는 특징이 있다.The present invention is fundamentally different from the conventional method because it selects and adds unsaturated fatty acid, methyl cellulose, or ethyl cellulose, which have a uniform particle size of a desired particle size, during the production of the insulation and sound insulation lightweight panels. Since the size and porosity of the pores can be adjusted arbitrarily, there is a feature that can produce a plate for building materials with improved heat insulation and sound insulation effect as well as lightening rate than that produced by the conventional method.

다음은 실시예를 통하여 본 발명을 설명한다.The following describes the present invention through examples.

(실시예 1)(Example 1)

국내 황등에 위치한 석재 가공공장의 화강석 절삭 및 표면연마 공정에서 수거한 석분 슬러지를 여과하고 100℃ 이하에서 건조하여 평균입도가 18㎛이며, 화학조성이 SiO268.5%, Al2O313.6%, Fe2O33.45%, CaO 2.88%, K2O 4.14%, Na2O 3.48%인 석분 350gr에 불포화 지방산인 평균입도 0.65mm인 스테아린산(Stearic Acid) 350gr을 첨가하여 혼합한 후 크기가 100 × 100 × 150mm의 철제 형틀에 투여하여 80kg/㎠의 압력으로 가압, 성형하여 판재화하였다.Granite sludge collected from granite cutting and surface polishing processes in the stone processing plant located in Huangdeung, Korea, is filtered and dried at below 100 ℃, and the average particle size is 18㎛, and the chemical composition is SiO 2 68.5%, Al 2 O 3 13.6%, 100 g of stearic acid with an average particle size of 0.65 mm of unsaturated fatty acid was added to 350 gr of stone powder with Fe 2 O 3 3.45%, CaO 2.88%, K 2 O 4.14%, Na 2 O 3.48% It was administered to an iron mold of 100 x 150 mm, pressurized and molded at a pressure of 80 kg / cm 2 to form a plate.

이 성형물을 전기로에 장입하고 이어서 전기로의 온도를 분당 10℃ 속도로 승온하여 400℃에 도달하면 전기로 내부에 공기를 일정한 속도로 주입하면서 30분간 1차 소성하여 첨가한 스테아린산(Stearic Acid)를 분해시켜 기공을 형성시키고 계속하여 온도를 분당 20℃ 속도로 승온하여 1,000℃에 도달하면 60분간 유지하면서 2차 소성하였다.The molded product was charged into an electric furnace, and then the temperature of the electric furnace was raised at a rate of 10 ° C. per minute and reached 400 ° C., whereby stearic acid was decomposed by first firing for 30 minutes while injecting air into the furnace at a constant rate. The pores were formed, and the temperature was continuously raised at a rate of 20 ° C. per minute, and when the temperature reached 1,000 ° C., secondary firing was performed for 60 minutes.

이 소성물의 비중은 0.74, 열전도율을 측정한 결과 0.15kcal/㎡h℃, 차음성을 측정한 결과 41dB 이었다.The specific gravity of this fired product was 0.74, the thermal conductivity was measured to be 0.15 kcal / m 2 h ° C, and the sound insulation was measured to be 41 dB.

(실시예 2)(Example 2)

실시예 1에 표기한 석분 500gr에 불포화 지방산인 평균입도 0.65mm인 스테아린산(Stearic Acid)200gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 1.06, 열전도율은 0.24kcal/㎡h℃, 차음성은 49dB이었다.500 gr of stone powder described in Example 1 was added and mixed with 200 gr of stearic acid having an average particle size of 0.65 mm, which was an unsaturated fatty acid, and then molded and calcined in the same manner as described in Example 1. The specific gravity of the calcined product was 1.06, and the thermal conductivity was measured. Was 0.24 kcal / m 2 h ° C., and sound insulation was 49 dB.

(실시예 3)(Example 3)

실시예 1에 표기한 석분 350gr에 불포화 지방산인 평균입도 0.59mm인 팔미틱산(Palmitic Acid)350gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 0.78, 열전도율은 0.19kcal/㎡h℃, 차음성은 46dB이었다.350 gr of stone powder described in Example 1 was added and mixed with 350 gr of palmitic acid having an average particle size of 0.59 mm of unsaturated fatty acid, followed by molding and firing in the same manner as described in Example 1. The specific gravity of the calcined product was 0.78, The thermal conductivity was 0.19 kcal / m 2 h ° C. and the sound insulation was 46 dB.

(실시예 4)(Example 4)

실시예 1에 표기한 석분 350gr에 불포화 지방산인 평균입도 0.70mm인 라우릭산(Lauric Acid)350gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 0.70, 열전도율은 0.14kcal/㎡h℃, 차음성은 39dB이었다.350 g of stone powder described in Example 1 was added and mixed with 350 gr of lauric acid having an average particle size of 0.70 mm of unsaturated fatty acid, and then molded and calcined in the same manner as described in Example 1. The specific gravity of the fired product was 0.70, The thermal conductivity was 0.14 kcal / m 2 h ° C. and the sound insulation was 39 dB.

(실시예 5)(Example 5)

실시예 1에 표기한 석분 350gr에 불포화 지방산인 평균입도 0.60mm인 유릭산(Lauric Acid)350gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 0.79, 열전도율은 0.21kcal/㎡h℃, 차음성은 48dB이었다.350 g of stone powder described in Example 1 was added and mixed with 350 gr of lauric acid having an average particle size of 0.60 mm, which was unsaturated fatty acid, and then molded and calcined in the same manner as described in Example 1. The specific gravity of the calcined product was 0.79, The thermal conductivity was 0.21 kcal / m 2 h ° C. and the sound insulation was 48 dB.

(실시예 6)(Example 6)

실시예 1에 표기한 석분 350gr에 평균입도 0.73mm인 메칠 셀루로즈(Methyl Cellulose)350gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 0.68, 열전도율은 0.11kcal/㎡h℃, 차음성은 36dB이었다.350 gr of stone powder described in Example 1 was added and mixed with 350 gr of methyl cellulose having an average particle size of 0.73 mm, and then molded and calcined in the same manner as described in Example 1. The specific gravity of the fired product was 0.68 and the thermal conductivity was 0.11 kcal / m 2 h ° C., sound insulation was 36 dB.

(실시예 7)(Example 7)

실시예 1에 표기한 석분 350gr에 평균입도 0.69mm인 에칠 셀루로즈(Ethyl Cellulose)350gr를 첨가하여 혼합한 후 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 0.69, 열전도율은 0.13kcal/㎡h℃, 차음성은 48dB이었다.350 gr of stone powder described in Example 1 was added and mixed with 350 gr of Ethyl Cellulose having an average particle size of 0.69 mm, followed by molding and firing in the same manner as described in Example 1. The specific gravity of the fired product was 0.69 and the thermal conductivity was 0.13 kcal / m 2 h ° C., sound insulation was 48 dB.

(실시예 8)(Example 8)

실시예 1에 표기한 석분 700gr를 실시예 1에 표기한 동일한 방법으로 성형 및 소성하였으며 이 소성물의 비중은 1.79, 열전도율은 1.53kcal/㎡h℃, 차음성은 58dB이었다.700 gr of the stone powder described in Example 1 were molded and calcined in the same manner as described in Example 1, and the specific gravity of the calcined product was 1.79, the thermal conductivity was 1.53 kcal / m 2 h ° C., and the sound insulation was 58 dB.

이와 같이된 본 발명은 폐기되는 석분 슬러지를 이용하여 기능성 경량판재를 제조할 수 있음으로 자원재활용과 폐기물처리의 저감등 2중 효과가 발생하는 것이다.As described above, the present invention can produce a functional lightweight plate using the waste stone sludge to be discarded, thereby generating a dual effect such as resource recycling and reduction of waste treatment.

Claims (1)

황등 석재 가공단지에서 화강석 원석을 일정한 두께로 절삭한 후 표면을 연마하여 건축재용 화강석 판재를 생산하는 공정에서 발생하는 폐기물인 석분 슬러지를 수거하여 여과, 건조한 석분에 구상형인 불포화 지방산, 메칠 셀루로즈(Methyl Cellulose) 또는 에칠 셀루로즈(Ethyl Cellulose)를 첨가, 혼합하는 제 1 공정, 이 혼합물을 철제 성형틀에 넣어 일정한 압력으로 가압, 성형하여 판재화하는 제 2 공정, 상기 성형물을 전기로에 장입하고 전기로의 온도를 분당 10℃ 속도로 승온하여 400℃에 도달하면 전기로 내부에 공기를 일정한 속도로 주입하면서 1차 소성하여 첨가한 유기물을 분해시켜 기공을 형성시키는데 제 3 공정과 이어서 온도를 분당 20℃ 속도로 승온하여 1,000℃에 도달하면 2차 소성하는 것을 특징으로 하는 건축재용 단열 및 차음용 경량판재 제조방법.After cutting the granite ore to a certain thickness in a yellow stone processing complex, grinding the surface to collect the stone powder sludge, which is a waste produced in the production of granite sheet for building materials, filtering and drying unsaturated granular fatty acid, methyl cellulose The first step of adding and mixing Methyl Cellulose) or Ethyl Cellulose, the second step of putting the mixture into an iron mold and pressurizing and molding it at a constant pressure. When the temperature is raised to 10 ° C. per minute and reaches 400 ° C., air is injected into the electric furnace at a constant rate while primary firing is performed to decompose the added organic material to form pores. The third step is followed by a temperature of 20 ° C. per minute. Insulation and sound insulation for building materials, characterized in that the secondary firing when the temperature is raised to 1,000 ℃ by speed Way.
KR1019960061481A 1996-12-04 1996-12-04 Process for the preparation of lightweight plate material KR100187428B1 (en)

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