巩义市会商是股红育耐火材料厂

　　石灰石用途广泛,产品市场前景看好,但因为石灰石在中国面广量丰,无地方资源优势可言,必须靠实力和其他优势获取市场份额。因此,面对这一资源,在开发应用时,应慎重选择,取最短的工序,最可能简单的方法,最现实的市场,以低成本、高质量,提高市场竞争能力。综合国内外石灰石产品深加工发展现状,介绍我国石灰石矿几种主要用途。 　　(1)最常见的是生产硅酸盐水泥。一般石灰石经过破碎、磨矿后均能达到水泥原料的要求。随着对外开放、国民经济建设的加快,水泥工业发展迅速,据估计国内未来20 年左右仅水泥工业一项将需求石灰石290 亿t 。 　　(2)生产高档造纸用涂布级重质碳酸钙产品。这类高附加值的微细、超细及活性重质碳酸钙在造纸工艺中应用十分广泛,粉碎后一般粒径- 2μm ≥90 %的用于中性施胶造纸工艺; - 2μm 粒径≥50 %的主要用于涂布纸的填料。 　　(3)用作塑料、涂料等生产工艺中的填料。作该类产品原料的天然碳酸钙矿物,即石灰石要求含CaCO3 (干基) :优级品9810 % ,一等品9610 % ,二等品9410 % , Fe2O3 ≤011 % , Mn ≤0102 % , Cu ≤01001 % ,白度90 以上。此外,一般平均粒径10～15μm 的粉矿用作涂料填充料, - 10μm 的用作塑料、橡胶、造纸的填料, - 5μm 的经活化处理后作油墨填充料。 　　(4)生产机械制造用的铸造型砂。石灰石生产的铸砂粒度为28～ 75 目,这种型砂具有比石英砂更优的性能,溃散性好,易于落砂清理,提高铸件表面质量,增加铸件表面光洁度,同时基本消除职工矽肺的危害。据统计仅各大钢铁公司每年要外购铸造型砂几万吨,这对冶金行业的石灰石矿是一个潜在的市场。 　　(5)生产脱硫吸收剂。石灰石破碎到0 ～ 2mm ,其中+ 2 mm < 5 %、0～ 0. 45 mm > 50 %的粉状代替原石灰或消石灰,在吸收塔内与水混合搅拌成浆液,吸收浆液与烟气接触混合,烟气中的二氧化硫与浆液中的碳酸钙以及鼓入的空气进行化学反应被脱除,最终反应产物为石膏。脱硫后的烟气经加热升温后排入烟囱。该工艺设备成熟,脱硫效率高,适用范围宽。目前贵州铝厂石灰石矿已建成一条石灰石脱硫剂生产线,其效益十分看好。 　　(6)石灰石经煅烧、碳化后可生产轻质碳酸钙产品。轻质碳酸钙按平均粒径可分为5 个粒度等级:微粒+ 5μm、微粉1～5μm、微细011～1μm、超细0102～011μm、超微细- 0102μm。目前纳米级轻钙工业化生产在广东、上海、浙江等地已相继问世。按产品晶型可分为球形、纺锤形、立方形、链锁形、片形、菱形。立方形、球形轻质碳酸钙更适合塑料工业。 　　(7)用于生产活性石灰、钝化石灰。石灰石煅烧生产活性石灰,并通过加工后可生产钝化石灰。钝化石灰具有吸潮、喷吹性能好等优点。这两种产品主要用作冶金行业中烧结矿的添加剂,炼钢用的造渣剂,铁水预处理时用的脱硫、脱磷剂,以及根据钢液初炼后的成分及成品规格要求,设计出的不同用途的精炼渣和根据钢种等调整的各种连铸保护渣等。 　　目前国内铁水预处理还处于起步阶段,仅有少数钢厂实行三脱即脱硫、脱磷、脱硅,大部分钢厂尚未进行铁水预处理。但是,日本、美国等冶金技术较为发达的国家的铁水预处理已达到80 %以上,预计5～ 10 a 内国内钢厂铁水预处理将会有较大的发展,CaO 和CaCO3是各种冶金炉料的基本组分,因此在冶金炉料的发展过程中石灰石也将有较好的开发应用前景。 　　化学加工^[1]　　石灰石经化学加工后可生产磷酸氢钙、内服补钙(药用级) 、食品工业补钙添加剂、疏松剂和高级牙膏摩擦剂、饲料添加剂、磷肥,以及乳酸钙、葡萄糖酸钙、氯化钙、碳化钙(电石) 等【制法及工艺流程】 　　粉碎法：系将含CaCO3在90%以上的白石用雷蒙磨或其它高压磨经粉碎、分级、分离，而制得的成品。 　　包装：塑料袋包装，每袋净重50公斤。 　　储运注意事项 储存于干燥的库房中。运输中防止袋破。不得与液体酸类共储混运。 　　相关标准1）JC830.1-2005《干挂饰面石材及金属挂件第1部分：干挂石材》 　　2）JGJ133《金属与石材幕墙工程技术规范》 　　3）美国ASTM标准。 　　4）JCG/T 60001-2007《天然石材装饰工程技术规程》

[editor this segment] introduction
With hydrochloric acid reaction: 2HCl = = = CaCO3 + + H2O + CO2 ↑ CaCl2 MaShi hardness value (MOH) : 3 and carbon dioxide reflect the equation: CO2 + Ca (OH) 2 = = = CaCO3 press + H2O elements relative atomic mass: O: 16, H: 1, Ca: 40 (relative molecular mass: 74 chemical composition: CaCO3 series: six FangJing 100.09 chemical analysis of molecular 0.07% sio2, 3 oxidation 2 aluminium 0.02%, trioxide iron, magnesium oxide, cao 55.22% 0.03% 0.08%, limestone blocks/powder: 40.79%), silicon 1.21%, iron, aluminum 4.62% 0.52% calcium, magnesium, 50.16% 1.10% baiyun limestone/block: silicon values, aluminum 0.15%, iron, calcium, magnesium 0.17% 32.1% 21.19% limestone is the main raw material production lime. Carbon dioxide (CO2) can make clear fluid of limewater [Ca (OH) 2 solution becomes muddy].
[editor this segment] applications
Cement limestone and clay is mixed by high temperature firing, etc. Glass, quartz, soda by limestone mixed by high melting, etc. Iron with limestone, remove the gangue as flux. Made with lime steel slag materials, sulphur, phosphorus removal such harmful impurities. Calcium carbide (main component is quick and CaC2) is in the eaf coke reaction. With limestone, soda salt, ammonia and other raw materials through the paces reaction (Kevin soave law). Using lime soda and reaction by heavy caustic soda (made). Using pure hydrated lime and chlorine bleaching of reaction. Use of chemical process limestone XiaoSuanGai calcium chloride, calcium sulfate, such important calcium salt. To remove water of lime, hard as temporary rigid softener. The limestone burn into pure powder used calcium carbonate, rubber, plastic, paper, toothpaste, cosmetics, etc. Of the stuffing Lime and caustic soda made of carbon dioxide, as the base of lime. Lime as desiccant and disinfectant. Agriculture, with quick lime sulfur compound bordeaux mixture, etc. The soil ShouShiHui can counteract the soil acid, improving soil structure, supply plants need osteocalcin. Brush with lime slurry, can protect trees trunks. China has 12-kilometer radius, therefore, destiny. The limestone cement industry is the grain, is the lifeblood of cement production. Cement production, if cannot limestone, who possess moment limestone, who will possess the resources of the cement industry development. At present cement enterprises for the market, also be for the war, therefore limestone resources superiority of the big enterprise group to realize their own resources as limestone development strategy of one of the measures. 1 and limestone is extremely useful as a valuable resource limestone is limestone mineral commodity name. In human civilization, limestone with its in nature, and easy to acquire wide distribution characteristics and has been widely used. As an important means of building materials has a long history in modern industry, mining, limestone is made of cement, lime, the main raw material, calcium carbide, metallurgical industry is indispensable, high-quality flux limestone superfine pulverizing writing lime, have been widely applied in papermaking, rubber, paint, coating, pharmaceutical, cosmetic, feed, sealing, bonding and polishing products manufacturing. According to not complete count, cement production cost of limestone and construction stone, lime production, metallurgy, superfine calcium consumption flux ratio of the sum of limestone for 1:3. Limestone are non-renewable resources, with the improvement of science and technology and the development of nanotechnology, limestone applications will be further widened. 2, our country is the world limestone ore resources are rich countries. Besides Shanghai, Hong Kong, Macao, in all provinces, municipalities and autonomous regions. According to the national building the geological distribution center of limestone area of 43.8 million KM2 (not including Tibet and Taiwan), accounts for about a land area of 1/20, which can make the limestone cement materials of total amount of resources, 1/4-1/3. In order to satisfy the environmental protection and ecological balance, and to prevent soil erosion, tourist resorts, etc, especially with the needs of construction of small towns in the planning, implementation and improvement of cement limestone extraction will decrease. The cement limestone mine dot already found seven, 8,000, of which has already proven reserves, including large deposits 1286 257, medium and small-sized 486 481 (more than 8000 tons of mineral reserves for large and medium-sized 40 ~ 8000 tons for less than 40 million tons, for small), total reserves of mineral reserves 542 million tons and tons of limestone reserves 504 93%, 38 million tons, reserves of marble 7%. Reserves are widely distributed in Shanghai in 29 provinces and municipalities outside of shaanxi province, autonomous region, 49 million tons, reserves for the country, For the rest, guangxi autonomous regions, anhui province of sichuan province and chongqing city) (including the reserves 34-30 million tons, Shandong, hebei, henan, guangdong and liaoning, hunan, hubei province each July 30 ~ 20 million tons of reserves, Heilongjiang, zhejiang, jiangsu, guizhou, yunnan, fujian, jiangxi, shanxi, xinjiang, jilin, Inner Mongolia, qinghai and gansu provinces reserves every 13 20 ~ 10 million tons, Beijing, ningxia, hainan, Tibet, tianjin five provinces all reserves 5 ~ 2 million tons.
[editor this segment] purposes
Extensive use of limestone, product market outlook, but because the limestone measurement in China, no local resources advantage, must rely on strength and other advantages for market share. Therefore, the resources in the development, application, should choose carefully, taking the shortest, the most possible, the most practical methods of market, low cost, high quality, enhances the market competition ability. The limestone products processing development situation, introduces several main USES of limestone ore exploitation. (1) is the most common Portland cement production. General limestone, after grinding after all can reach the requirement of cement materials. With the opening of the national economic construction, accelerate, cement industry is developing rapidly, and an estimated 20 years only domestic cement industry a will needs limestone 290 million. (2) producing high-grade paper with heavy calcium carbonate grade coating products. This kind of high value-added subtle, superfine heavy calcium carbonate and activity in papermaking technology application is very extensive, after smashing general size - 2 muon m p 90 % of papermaking technology for neuter glue, Through particle size m 2-5 % of the experiment.it coated paper, mainly used for packing. (3) used for plastic coating, the packing process. For this product of natural materials, i.e. carbonate mineral requirements including limestone CaCO3 (dry) : -grade product 9810 %, 9610 %, grade b product 9410 %, Fe2O3 acuities 011 %, Cu, Mn acuities 0102 % than 01001 % above 90 degrees, white. In addition, the general average size 10 ~ 15 mu of powder coating of mine for m, - 10 mu tower.it m used for plastic, rubber, paper packing, - 5 muon m the activation treatment for ink filler after. (4) production machinery in foundry sand. The limestone producing casting sand degrees for 28-75, more than quartz sand with the optimal performance, good, easy to fall and collapsibility of sand casting surface cleaning, improve quality, increase casting surface finish, and basically eliminate harm of silicosis worker. According to statistics, only big steel company every year to outsourcing foundry sand tens of thousands of tons of metallurgical industry, it is a potential of lime stone of the market. (5) production desulfurization sorbent. The limestone broken to 0 ~ + 2 mm, including 2mm < 5 %, 0-0. 45 mm > 50 % of powdered lime or lime, instead of the original water absorption tower in mixing into grout, absorption and smoke exposure, mix slurry of sulfur dioxide and grout of carbonate and drum into the air for chemical reaction, the final product by removing to gypsum. The flue gas desulfurization by heating up the chimney. This process equipment, desulfurization efficiency, mature wide application scope. Now guizhou aluminum lime stone has built a limestone desulfurizer, its efficiency is a promising line. (6) lime, after writing can produce light calcium carbide products. According to the average size of lightweight caco3 particle can be divided into five level: the particle + 5 muon m, micro powder, 1 ~ 5 muon m, subtle 011-1 muon m, superfine 0102 ~ 011 muon m, superfine - 0102 muon m. Currently nano-meter calcium light industrial production in guangdong, Shanghai, zhejiang, etc have successively. According to the crystal sphere, can be divided into the spindle, square, chains, and diamond. Set square, spherical light calcium carbonate is more suitable for plastics industry. (7) used in the production of active lime and passivation lime. Calcined limestone producing active lime, and through the processing production lime passivation. Passivation lime has hygroscopic, injection performance, etc. These two kinds of products mainly used in metallurgy, steel sinter additive with slagging agent, iron pretreatment of desulfurization, use, and according to the dephosphorization of liquid steel refining and early after finished product specifications, design of the different USES of refining slag and various kinds of adjustment according to such use.suggestions etc. At present domestic iron pretreatment is still in the initial stage, only a few steel practice three off dephosphorization desulfurization, namely, silicon steel, iron pretreatment for most. However, Japan, the United States and other metallurgical technology developed country has reached the iron pretreatment 80 % above, is expected to 5 ~ 10 within a domestic steel iron pretreatment will have greater development, CaO CaCO3 and is the basic components, metallurgy furnace charge in metallurgy furnace charge in the development process of limestone will also have good development prospect. Chemical processing [1] chemical processing after writing lime can produce DCP, oral calcium (level), food industry, medicine additive, osteoporosis and calcium senior toothpaste MaCaJi, feed additives, phosphate, and calcium lactate, calcium gluconate, calcium chloride, calcium carbide TanHuaGai (etc) and the process of the act. FenSuiFa: department will contain more than 90% of CaCO3 baishi with high grinding mill or other Raymond by crushing, classification, separation, and the finished product. Packaging: plastic packaging bags of 50kgs net each. Store in dry storage and matters needing attention in the warehouse. Transport prevent bags break. Not to mix of reservoir fluid acids. Relevant standards 1) JC830.1-2005 the dry-hanging facing stone and metal guajian part 1:2) dry-hanging stone of the metal and stone walls JGJ133 engineering technical specification of 3) ASTM standards. 4) JCG/T 60001-2007 "natural stone decoration engineering rules"

石灰石