Tangshan nikka factory set up tangshan nikka mineral products co . , ltd . in tangshan development area of advanced technology in 2003 , which mainly exploit and produce advanced precision casting sands and other minerals . to enlarge the product market , broaden the sales channel , develop the new product and build the new market , we set up three sales departments , for promoting sales and exploiting new products 唐山日加矿物有限公司于2003年在河北省唐山市高新技术开发区成立，并全套引进日本生产线以及生产和管理技术，主要是从事精密铸材和其它矿产品的研究开发与生产。产品以锻烧高岭土为主，工厂可以提供各种用于精密铸造的产品,涵盖200mesh 1 . 5mm等各种规格。
The relation between addition content of calcined kaolin , aluminium powders and aluminum sulfate in concrete and compressive strength , slump constant , 30min slump and permeability altitude were studied , and according to the experiment results , the component percent contents of crack - resistant and water - repellent admixture in cement were determined as following : calcined kaolin 6 % , aluminum sulfate 4 % and aluminium powders 0 . 005 % 通过对煅烧高岭土、铝粉、硫酸铝在混凝土中掺量对其抗压强度、初始武汉理工大学硕士学位论文坍落度、 3omin坍落度保留值及透水高度的影响，确定了配制抗裂防水外加剂的各组成成分以其占水泥质量的百分比分别为:锻烧高岭土6 % ，硫酸铝4 % ，铝粉为0 . 005 % 。
In similarity , r - tios / t - zro2 powders in well - crystallized forms were obtained after heat - treated at 400 ? for two hours while zrtio , pow ' ders were successfully obtained after heat - treated at 1200 . surface modification of nanosized rutile phase powders coated by organic and inorganic reagents were studied 类似地，对tio ;亿roz复合粉体进行锻烧，在1200保温3h即得到了zrtiq .陶瓷粉对自制纳米金红石型粉体进行了有机和无机改性研究，研究了纳米粉体的分散行为。
During the preparation process of the solid solution , a series of effect conditions were discussed such as ph value , si / h2o , the content of ligant , the surface active agent , the aging temperature , the drying means , the drier gel calcine and their effects on the gel quality , the process of sol - gel , the granular of powder and the density of the pellets , from which the best reaction condition was found 在制备过程中系统地研究了各种反应条件如ph值、 sal ； o 、络合剂的添加量、老化温度、干燥方式、干凝胶的锻烧方式等对溶胶“的质量、溶胶凝胶过程、粉体粒度及烧结体密度等的影响，确定了最佳反应条件：三、以li 。石i 。 。
