Abstract:
PURPOSE: A solidifying material for artificial soil is provided to prepare high quality artificial soil by solidifying sewage sludge in order to satisfy the moisture content of the sewage sludge and the strength for artificial soil and to improve work environments. CONSTITUTION: A solidifying material for artificial soil containing calcium chloroaluminate mineral includes, based on 100 parts by weight of a solidifying object, 5~10 parts by weight of quicklime, 5~15 parts by weight of calcium chloroaluminate mineral, 5~10 parts by weight of heavy metal absorbents, 0.1~2 parts by weight of citric acids or tartaric acids and 5~10 parts by weight of illite powder. The heavy metal absorbent uses the clean water sludge in which an absorbing membrane is formed on the surface by controlling the Al/Si mole ratio of 1~1.5, wherein the clean water sludge has the particle size of 4,000~6000 cm^2/g and the water content of 3~7%.
Abstract translation:目的:提供人造土固化材料,通过固化污泥来制备高品质人造土,以满足污泥污泥的含水量和人造土强度,改善工作环境。 构成:用于含有氯铝酸钙矿物的人造土壤固化材料包括:基于100重量份固化物,5〜10重量份生石灰,5〜15重量份氯铝酸钙矿物,5〜10重量份 重金属吸收剂的重量,0.1〜2重量份的柠檬酸或酒石酸和5〜10重量份的伊利石粉末。 重金属吸收剂通过控制Al-Si摩尔比为1〜1.5,使用表面形成吸收膜的清洁污泥,其中清洁水泥的粒度为4000〜6000cm ^ 2 / g 含水量3〜7%。
Abstract:
PURPOSE: A solidifying agent for the disposal of heavy metal-containing waste is provided to ensure a fast ettringite production reaction rate and excellent heavy metal fixation power as well as effective solidification of high moisture-containing sludge. CONSTITUTION: A method for preparing a solidifying agent for the disposal of heavy metal-containing waste comprises: (i) pulverizing alumina mineral so that the brain specific area of the powder is 2,000~5,000 cm^2/g; and (ii) mixing 2~40 parts by weight of alumina mineral, 1~5 parts by weight of insoluble anhydrite powder, 0.5~10 parts by weight of alkali carbonate that is Na2CO3 or K2CO3, and 0.5~10 parts by weight of sulfate that is Al2(SO4)3 based on 100 parts by weight of cement sludge.
Abstract translation:目的:提供一种用于处理含重金属废物的固化剂,以确保钙铝矾石生产反应速度快,重金属固定能力强,以及高含水量污泥的有效凝固。 构成:制备用于处理重金属废物的固化剂的方法包括:(i)粉碎氧化铝矿物,使得粉末的脑比面积为2,000〜5,000cm 2 / g; 和(ii)将2〜40重量份的氧化铝矿物,1〜5重量份的不溶硬石膏粉末,0.5〜10重量份的Na 2 CO 3或K 2 CO 3的碱金属碳酸盐和0.5〜10重量份的硫酸盐 即基于100重量份水泥污泥的Al2(SO4)3。
Abstract:
PURPOSE: Calcium aluminate-based clinker using wastes and a method for manufacturing the same are provided to obtain eco-friendly calcium aluminate-based clinker by mixing asbestos wastes, municipal solid waste incineration ash, water treatment sludge, gypsum, fluorite, and silicon carbide in a pre-set ratio. CONSTITUTION: A method for manufacturing calcium aluminate-based clinker includes the following: 30 to 70 parts by weight of water treatment sludge, 10 to 40 parts by weight of asbestos wastes, 1 to 5 parts by weight of silicon carbide, 5 to 15 parts by weight of gypsum, and 2 to 10 parts by weight of fluorite, based on 100 parts by weight of municipal solid waste incineration ash. The mixture is sintered in a sealed space for 1 to 2 hours at temperature between 1000 and 1300 degrees Celsius. The temperature raising speed of the sintering process is 10 degrees Celsius/min. The gypsum is selected from a group including desulfurization gypsum, phosphogypsum, hydrofluoric acid gypsum, and the mixture of the same. The municipal solid waste incineration ash includes CaO and Cl. The water treatment sludge includes Al_2O_3 and SO_3.
Abstract:
PURPOSE: A calcium chloroaluminate mineral and a method for manufacturing the same are provided to obtain calcium chloroaluminate mineral-based cement using municipal solid wastes-based incineration fly ash and water treatment sludge. CONSTITUTION: A calcium chloroaluminate mineral includes municipal solid wastes-based incineration fly ash and water treatment sludge. The method for manufacturing the calcium chloroaluminate mineral includes the following: 30 to 80 parts by weight of the water treatment sludge is mixed with municipal solid wastes-based incineration fly ash to obtain a mixture. The mixture is mixed with alcohol. A drying process at temperature between 40 and 70 degrees Celsius is followed. The mixture is sintered in a sealed space for 1 to 2 hours at temperature between 1000 and 1300 degrees Celsius. The temperature raising speed of the sintering process is 10degrees Celsius/min.
Abstract:
PURPOSE: A heavy-metal adsorbing method is provided to stably solidify CO2 gas since the components of granulated waste cement reacts with the CO2 gas to generate CaCO3(Calcium Carbonate). CONSTITUTION: A heavy-metal adsorbing method is as follows. Gel-type silica is prepared. The silica reacts with aqueous solution, in which heavy metal cation has been dissolved, and the heavy metal is adsorbed to the silica.
Abstract:
PURPOSE: A method for efficiently separating an iron oxide contained in the floor material of a thermoelectric power plant is provided to improve the separating efficiency of the iron oxide using a wet type magnetism separator. CONSTITUTION: Floor ash is generated by the incineration of briquette in a thermoelectric power plant. The floor ash is introduced into a dryer. The dryer dries the floor ash(S10). The floor ahs is pulverized as much as the size of 0.15mm using a pulverizer(S20). The magnetic force strength is adjusted between 200 and 2000gauss using a wet type magnetism separator. An iron oxide is separate(S30).
Abstract:
An apparatus for manufacturing high-quality recycled aggregates is provided to increase usability of a product by improving the quality of the recycled aggregates by effectively removing cement paste attached to the surface of the low-quality cycled aggregates produced by a simple crushing process. The apparatus includes: a hopper(10) for supplying crushed cycled aggregates; a transfer screw(40) for dispersively transferring the cycled aggregates supplied from the hopper by being arranged on an outlet of the hopper; a heater(20) for pre-processing the aggregates so that paste of the surface of the aggregates is removed by a physical impact by heating the cycled aggregates, and comprising a heating furnace(21) for heating and transferring the cycled aggregates, a heat source(22) for maintaining the inside of the heating furnace at 300-500 deg.C, and a fan(23) for blowing the heat by the heat source in the heating furnace; and a grinder(30) for removing the pre-processed paste by mutually colliding the heated aggregates.
Abstract:
본 발명은 화력발전소 바닥재를 이용한 시멘트 첨가제 제조 방법에 관한 것으로, 특히 화력발전소 보일러의 바닥재에 있어서; 상기 바닥재를 해수 냉각 처리 없이 공기로 냉각시키는 냉각 단계와; 상기 냉각 단계에서 냉각된 상기 바닥재를 분쇄기로 분쇄하는 분쇄 단계와; 상기 분쇄 단계에서 분쇄된 바닥재를 입도분급에 의해 50메쉬 이하로 선별하는 선별 단계와; 상기 선별 단계에서 분쇄된 상기 바닥재를 볼밀로 갈아 바닥재 미분말의 블레인 비표면적을 2,000∼4,000cm 2 /g로 제조하는 분말 제조 단계; 및 상기 분말 제조 단계에서 선별된 상기 바닥재 미분말을 포틀랜드 시멘트에 5~15 중량%로 혼합하는 혼합 단계로 이루어지는 것을 특징으로 한다. 상기와 같이 이루어진 본 발명에 따르면 화력발전소 바닥재의 건조 및 해수에 매립되어 처분되는 종래의 방법에서 탈피하여 화력발전소 바닥재를 시멘트 첨가제로 활용할 수 있도록 하여 포틀랜드 시멘트에 일정량을 혼합하여 시멘트를 제조함으로써 콘크리트의 장기강도, 저수화열 및 내화학성을 증진시킬 수 있다. 화력발전소, 바닥재, 포졸란 반응성, 시멘트 첨가제, 공기 냉각
Abstract:
본 발명은, 폐콘크리트 미립분의 표면 개질과 입도조정에 의한 시멘트 제조방법에 관한 것이다. 특히, 시멘트 분말도 4,000cm 2 /g 이상으로 분쇄한 후 고속회전 부유믹서에서 시멘트로 제조된 모르타르, 콘크리트의 초기 수화를 지연시키고, 유동성이 향상되도록 끓는 온도가 물과 비슷한 카르복실기를 포함시킨 화학혼화제인 감수제를 시멘트 입자 표면에 흡착시키는 폐콘크리트 미립분의 표면 개질과 입도조정에 의한 시멘트 제조방법에 있어서, 시멘트 제조시 입도조정과 포조란 반응에 의한 유동성과 강도가 향상되도록 시멘트 분말도 8,000 cm 2 /g로 분쇄한 슬래그 미분말 5∼15중량%에 50∼100㎛의 폐콘크리트 미립분의 굵은 입자를 3∼10중량% 혼합하여 시멘트 입도와 잔골재 입도를 연속 입도로 제조하여 모르타르 및 콘크리트의 유동성 향상과 슬래그의 포조란 반응성을 부가하여 고강도를 발현할 수 있는 시멘트 제조방법에 관한 것이다. 폐콘크리트 미립분, 표면 개질, 입도 조정, 화학혼화제, 시멘트
Abstract:
본 발명은 수산화칼슘과 탄산나트륨 수용액의 균일침전 반응에 의한 아라고나이트형 침강성 탄산칼슘 제조방법에 관한 것으로서 특히, 수산화칼슘 현탁액과 탄산나트륨 수용액을 각각 제조한 후, 수산화칼슘 현탁액에 탄산나트륨 수용액을 일정한 속도로 첨가함으로써, 균일한 반응이 일어나도록 하여 수용액법에 의한 제조가 이루어지도록 한 수산화칼슘 및 탄산나트륨 수용액의 균일침전 반응에 의한 아라고나이트형 침강성 탄산칼슘 제조방법에 관한 것이다. 본 발명에 따른 아라고나이트형 침강성 탄산칼슘 제조방법은 수산화칼슘을 증류수에 분산시키는 현탁액 제조단계와, 상기 현탁액 제조단계에서 생성된 수산화칼슘 현탁액에 수산화나트륨 수용액을 첨가하는 안정화 단계와, 상기 수산화칼슘 현탁액을 교반시키면서 일정한 속도로 탄산나트륨 수용액을 공급하여 일정 농도의 탄산칼슘 현탁액을 이루도록 하는 교반단계와, 상기 교반단계에서 공급된 탄산칼슘 현탁액을 세척 및 여과하여 건조시키는 탄산칼슘 제조단계가 포함된 것을 특징으로 한다. 아라고나이트형 침강성 탄산칼슘, 균일침전, 액상반응법