What can be done with phosphogypsum?
Date:2021-09-23 15:24:32
Author:admin
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142
Phosphogypsum is an industrial waste discharged from phosphate rock in the production of phosphoric acid or phosphate fertilizer industry. Phosphogypsum is mostly off-white, and some are yellow and gray-yellow, with a density of 2.05-2.45g/cm3 and a bulk density of 0.85g/cm3. It is a multi-component complex crystal.
Phosphogypsum can be used in the cement industry (sulphuric acid co-production of cement and cement retarder), production of gypsum building materials, production of chemical raw materials, and used as roadbed or industrial fillers, etc. The country also has corresponding policies for the disposal of phosphogypsum. It is understood that the country’s preferential policies for the recycling and utilization of phosphogypsum are produced in the production process of the company in addition to the products specified in the original design. The income from products produced from the resources as the main raw materials in the "Resources Comprehensive Utilization Catalogue" will be exempted from income tax for five years from the date of production and operation. In some areas, there is a government subsidy of 20 yuan for the disposal of 1 ton of phosphogypsum. At present, the domestic storage of phosphogypsum is about 600 million cubic meters, with an annual increase of 80 million cubic meters. The disposal and utilization of phosphogypsum is relatively high in Japan and Germany, and the domestic utilization rate is very low.
Henan Zhengzhou Mining Machinery Co., Ltd. is a supplier of phosphogypsum overall disposal solutions. With technical support from experts in metallurgy, building materials, chemical and other industries, and long-term cooperation with the School of Chemical Engineering of Zhengzhou University, we have a skilled process route and a professional mechanical design team. The company has built a pilot test production line to meet various test requirements. The company is also a supplier of complete sets of equipment and can do all the processes from design, construction, installation, and commissioning. In the decades of continuous development of the company, we have been committed to contributing to the cause of environmental protection, adhering to the concept of "morality in advance, benefits for others", and efficient service to every customer.
