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钛白粉制造方法
来源:      时间:2012/6/29

钛白粉制造方法两种:硫酸法(Soleplate Process)和氯化法
    一.硫酸法是将钛铁粉与浓硫酸进行酸解反应生产硫酸亚钛,经水解生成偏钛酸,再经煅烧、粉碎即得到钛白粉产品。此法可生产锐钛型和金红石型钛白粉。硫酸法的优点是能以价低易得的钛铁矿与硫酸为原料,技术较成熟,设备简单,防腐蚀材料易解决。其缺点是流程长,只能以间歇操作为主,湿法操作,硫酸、水消耗高,废物及副产物多,对环境污染大。
    二.氯化法是将金红石或高钛渣粉料与焦炭混合后进行高温氯化生产四氯化钛,经高温氧化,再经过滤、水洗、干燥、粉碎得到钛白粉产品。氯化法只能生产金红石型钛白粉。氯化法优点是流程短,生产能力易扩大,连续自动化程度高,能耗相对低,“三废”少,金红石型钛白粉能得到优质产品。其缺点是投资大,设备结构复杂,对材料要求高,要耐高温、耐腐蚀,装置难以维修,研究开发难度大。

itanium pigment manufacturing methods of two kinds: sulfuric acid method (Soleplate Process) and LvHuaFa, sulfuric acid method is a titanium iron react with sulfuric acid in acid solution to produce the titanium sulfate, the hydrolyzed metatitanic acid is generated, then through calcinations, crushing the titanium white product. This method can produce sharp titanium type and rutile type titanium pigment. Sulfuric acid method has the advantage of low price available to titanium iron ore with sulfuric acid as raw material, the technology is relatively mature, simple equipment, anti-corrosion material is easy to solve. Its shortcomings is a long process, can only give priority to with intermittent operation, wet operation, sulfuric acid, high water consumption, waste and by-products, more pollution to the environment.

2. LvHuaFa is rutile or high titanium slag powder is mixed with coke after high temperature chlorination production titanium tetrachloride, oxidized by high temperature, then through filtration, washing, drying, crushing the titanium pigment products. LvHuaFa only rutile type titanium pigment production. LvHuaFa advantage is process short, production capacity is easy to expand, continuous high degree of automation, low energy consumption, less "three wastes", rutile type titanium pigment can get high quality products. Its disadvantage is that large investment, complex equipment structure, the material demand is high, high temperature resistant, corrosion resistant, device is difficult to repair, research and development is difficult.

    
 
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