氧化钙,俗称生石灰,广泛应用于塑料消泡剂、冶金助溶剂、造纸、废水净化处理、制革、橡胶塑料填充助剂、垃圾焚烧、金属工厂酸碱中和, 漂白,干燥、热电厂脱硫脱酸等行业。
外观与性状:白色无定形粉末,含有杂质。
时呈灰色或淡黄色,具有吸湿性
分子量:56.08
沸 点:2850℃
熔 点:2580℃
溶解性:难溶于水、不溶于醇,溶于酸、甘油
密 度:相对密度(水=1)3.25~3.38g/cm3
稳定性:稳定
危险标记:20(碱性腐蚀品)
主要用途:用于建筑,并用于制造电石、液碱、漂白粉(制取:氯气通入石灰乳2Cl2 + 2Ca(OH)2 = Ca(ClO)2 + CaCl2 + 2H2O)和石膏。实验室用于氨气的干燥和醇的脱水等 。
用 途:氧化钙用于钢铁、农药、医药、非铁金属、肥料、制革、制氢氧化钙,实验室氨气的干燥和醇脱水等。
氧化钙还可通过与水反应来产生大量的热,常用于自动加温包装。虎门销烟时,当时林则徐一为防止废气,二为避免鸦片污染土壤,就采用向水中加入鸦片和氧化钙的方法来分解鸦片。
工艺流程 碳酸钙加盐酸→酸解→加氨水中和→静置沉淀→过滤→加碳酸氢钠反应→碳酸钙脱水→干燥→煅烧→筛选→包装→氧化钙
氧化钙是生产电石的重要原料,将氧化钙和碳一起在电炉中熔化,生成碳化钙,即电石。
CaO + 3C =高温= CaC2 + CO↑
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Color: Grey, or bluish white.
Size: 0.5-2, 1-3, 2-4, 4-8, 8-12, 10-15, 10-20, 20-50cm, 100mesh, 200mesh, 325mesh
Stable calcium carbonate content 97% min
Index: CaO:≥54%±1%; MgO:≤0.5%; SiO2:≤1%
Packing: 50kg/PP.Bag, or Ton Bag
2. QUIK LIME LUMPS OR POWDER
Color: White
Size: 0.5-2, 1-3, 2-4, 4-8, 8-12, 10-15, 10-20, 20-50cm, 100mesh, 200mesh, 325mesh
3. HYDRATED LIME POWDER
Color: White
Size: 100, 150, 200, 250, 325, 400mesh.
Ca(OH)2: 80%min, 85%min, 90%min, 95%min
Items | Content% |
Main assay (as Ca(OH)2 )%≥ | 90 |
Fe %≤ | 0.1 |
Mg and alkali metals (as MgO)%≤ | 1 |
Insoluble matter in HCl%≤ | 1 |
Fineness (residue in 125mesh sieve)%≤ | 1 |
Moisture %≤ | 2 |
Packing: 25kg/PP.Bag, or Ton Bag
Main Usage: Water treatment, leather-making, paper-making, desulfuration and deacidification of industrial boiler, chemicals and building materials etc. packing and transport: product can be packed in bulk, bags and our company will provide logistics service
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