Witton Cement Group Co., Ltd. Share: classification of special cement sulphate resisting cement: sulfate corrosion of cement having a higher ability to resist. According to the mineral composition of cement can be divided into sulphate resisting portland cement, slag cement and belite strontium aluminate cement. Size by cement resistance to sulfate attack capability, can be divided into high sulphate resisting cement and sulphate resisting cement. Sulphate resisting cement sulphate resisting Portland cement is the main species of special cement plant, portland cement clinker special cement standards by a specific mineral composition, adding the right amount of finely ground gypsum formed. Chinese standards: sulphate resisting Portland cement clinker in the role of special cement, tricalcium silicate content of not more than 50%; tricalcium aluminate is not more than 5%; tricalcium aluminate, calcium and iron and aluminum acid content of not more than four 22%; free lime content of not more than 1.0%; magnesium content of not more than 4.5%; and sulfur trioxide cement content shall not exceed 2.5%; cement sulphate resistance index, which shall not be less than 0.8 Fb corrosion factor. Sulphate resisting cement applied to sulfate attack as well as by freeze-thaw and wet action harbor engineering, hydraulic engineering and underground engineering. Witton Cement Group Co., Ltd. to share: our special cement the status quo and development trend common silicate cement due to a long history of reliable performance and low price has been widely applied, has become one of today's building materials. 1995 world cement production reached 14 million tons, of which more than 95% are common silicate cement. But such common cement NA or not fully applicable to special projects, such as Water Power engineering, oil and gas well cementing engineering, high temperature engineering, decoration and corrosion engineering. For this reason the world are committed to research and development of new varieties of cement has special properties and special features of the so-called special cement. At present, the developed industrial countries special cement production generally accounts for 5% to 10% of total production of cement. 1995 total output of 476 million tons of cement, special cement production was 656.45% tons, accounting for only 1.38% of total production of cement. Special Cement Standard | Witton cement (certified) | Yuncheng Special cement provided by Witton Cement Group, LLC. Witton Cement Group Co., Ltd. (www.sxwdgs.com/) Shanxi Yuncheng, cement and products of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Witton cement leadership with the staff warmly welcome all inquiries negotiations to create Witton cement a better future.