For phosphorus fertilizer plant residue accumulation occupation of land and pollute the environment status quo, in 2013 in Guangdong, Guangxi, China Resources Cement to some organization in the cement base camp to carry out applied research phosphogypsum instead of natural gypsum, and success. Phosphogypsum instead of natural gypsum application effectively reducing the pressure on the land occupied by the accumulation of industrial waste and secondary pollution of the environment, because of the industrial waste in cement production and successfully applied P.C42.5 admixture of more than 27% of the total content Good cost efficiency effects. Lian boiling cooking method can only detect the damaging effects of free calcium oxide. Because magnesium excesses slower than the excesses of Guangzhou, China Resources Cement hydration rate of calcium oxide, and therefore can not be found with a boiling pot Brewing Resources Cement unrest caused by magnesium oxide, only through the autoclave test temperature, high pressure, in order to determine which phenomenon. The sulfur trioxide caused unrest in Foshan, China Resources Cement 32.5, only cold bread method, the flooding method to be tested, after the upcoming test cake in water conservation 28d 20 ℃ ± 3 ℃, and check whether there is instability phenomenon. Because when the temperature exceeds 60 ~ 70 ℃ when China Resources Cement distribution, will not produce the volume expansion of the sulfur to form calcium aluminate. Due to the national standard of magnesium oxide and sulfur trioxide has been limited provisions content, so the two methods and test pressure steam flooding method generally can not do. Due to the national standard of magnesium oxide and sulfur trioxide has been limited provisions content, so the two methods and test pressure steam flooding method generally can not do. Guangzhou, China Resources Cement, a booming construction materials (certified), provided by the Guangdong Shunde, China Resources Cement Building Material Co., a booming. A booming Guangdong Building Materials Co., Ltd. (shop1395766632317.1688.com/)(www.foshanshuini.com) Guangdong Foshan, cement and products of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In a booming building materials led the staff warmly welcome all inquiries negotiations to create a booming building materials and a better future.