钛石膏在烧结砖中的应用研究  

Study on the Application of Titanium Gypsum in Sintered Brick

作　　者：李亮[1] 

机构地区：[1]攀枝花学院材料工程学院,四川攀枝花617000

出　　处：《钢铁钒钛》2015年第4期53-57,共5页Iron Steel Vanadium Titanium

摘　　要：钛石膏为硫酸法钛白生产过程中的副产品,每生产1 t钛白会产出4~5 t钛石膏。将钛石膏进行预处理后作为黏结剂加入以煤矸石为主要原料的烧结砖中,有效解决了钛石膏堆存和环境污染问题。通过条件试验和正交试验,研究了煅烧温度、黏土添加量、钛石膏添加量和高温保温时间对强度的影响。条件试验表明：烧结砖强度随黏土配入量、煅烧温度和高温保持时间增加而增加,随钛石膏加入量增加而降低。正交试验表明：在黏土添加量相对稳定（20%左右）的条件下,其余3因素对烧结砖强度影响大小依次为：钛石膏添加量〉高温保温时间〉煅烧温度。最佳参数分别为：钛石膏的添加量14%,高温保温时间8 h,煅烧温度1 000℃。Titanium gypsum is a by- product in producing titanium dioxide（ Ti O2） by sulfuric acid method. 4 ~ 5 tons of titanium gypsum is produced for the production of every one ton of titanium dioxide. The environment pollution of the titanium gypsum can be efficiently resolved by adding the pretreated titanium gypsum to the sintered brick with gangue as main raw material. The influences of calcination temperature,addition amount of clay and titanium gypsum,and heat preservation time on the strength of the sintered brick were investigated by conditional and orthogonal tests. The results of conditional tests show that the strength of sintered brick increases with increase of calcination temperature,heat preservation time and the addition amount of clay,but it decreases with increase of addition amount of titanium gypsum. The results of orthogonal tests show that under a relatively stable addition amount of clay,the influence order of other factors on the strength of sintered brick is addition amount of titanium gypsum heat preservation time calcination temperature. The optimum parameters are as follows： 14% of titanium gypsum addition,8 h of heat preservation and 1 000 ℃ of calcination.

关 键 词：钛白 钛石膏 烧结砖 强度 

分 类 号：TU522.1[建筑科学—建筑技术科学]