Turn phosphogypsum from waste into treasure”

Since last year, the company has planned to invest 475 million yuan to build, in three phases, a project for the upgraded utilization of phosphogypsum on a site covering 475.1 mu. This project involves constructing a new production line for cement retarders with an annual output of 900,000 tons, seven production lines for construction gypsum powder with an annual output of 250,000 tons each, twelve production lines for gypsum wall panels with an annual output of 1 million square meters each, thirty-six production lines for gypsum blocks with an annual output of 225,000 square meters each, one production line for plastering gypsum with an annual output of 200,000 tons, and one production line for gypsum putty with an annual output of 200,000 tons. These facilities will be used to upgrade the existing systems for the utilization of phosphogypsum, enabling the production of high-strength alpha-type gypsum powder and beta-type gypsum powder after purifying the gypsum. At the same time, high-quality gypsum building materials such as gypsum mortar, gypsum blocks, gypsum panels, and self-leveling mortar are produced using gypsum powder. The entire project is expected to be completed within three years. Once it is in operation, it is anticipated to generate annual sales revenue of 1.12 billion yuan, additional profits and taxes of 284 million yuan, and create 536 new jobs.

It is reported that last year the company produced 2 million tons of phosphogypsum annually. Due to the limited market for cement retarders, the production volume of construction gypsum powder was also low; as a result, the entire phosphate processing plant could operate at only 60% capacity, allowing it to handle 1.2 million tons of phosphogypsum per year. Of this amount, around 1 million tons were used for cement retarders, while more than 100,000 tons were used for construction gypsum powder. Once the new comprehensive utilization and upgrading project for phosphogypsum is completed, it will enable the entire phosphate production facility to operate at full capacity. This will allow for the processing of 2 million tons of phosphogypsum per year, with 80% of it being used as building gypsum powder and 20% as a cement retarder, thereby turning losses into profits and achieving a true balance between production and consumption.

The reporter also learned that in order to further increase the added value of phosphogypsum products and ensure the smooth progress of the entire project, Sichuan Longmang Phosphorus Chemical Co., Ltd. utilizes its **-level technology center as a platform to collaborate with institutions such as the Sichuan Building Materials Research Institute, Sichuan University, Wuhan University of Technology, and Southwest Jiaotong University, as well as internationally renowned companies like Saint-Gobain and Nippon Paint. Through joint efforts in technological research and development and the transformation of Research findings, the company produces a range of gypsum-based building materials with differentiated features and high quality. This approach not only promotes green and sustainable utilization of resources but also makes a positive contribution to the economic development of the region as well as to job creation and stability.

What are the main components of phosphogypsum? Beixin New Materials makes good use of it, mixing it into gypsum board!

Once I visited the chemical industry park in Hancheng, Shaanxi Province, where a farmer-owner had established a circular industrial park that made full use of various resources such as coal, utilizing them to the fullest extent possible in a sustainable, efficient, and environmentally friendly manner. It made me realize how meaningful the chemical industry is – it’s full of advantages, and it’s truly a great industry. I hope that projects like the Jingbian-Yan’an coal oil blending facility can be found everywhere, allowing for full utilization of resources, efficient recycling, and benefits for humanity!

It should be put into operation and promoted as soon as possible, as phosphogypsum poses a significant environmental pollution risk.

I remember there was a post last year dedicated to phosphogypsum; it can’t be found anymore

It is understood that currently, the stock of phosphogypsum in Xiangyang amounts to about 40 million tons, with an additional 4 million tons added each year; yet the annual utilization volume is only around 400,000 tons. The issue of dealing with phosphogypsum is therefore urgent. “Apart from chemically modifying existing phosphogypsum sites and making on-site improvements, the fundamental solution to the problem of phosphogypsum disposal and utilization lies in its comprehensive development and utilization – turning waste into resources, achieving a balance between production and use, and gradually reducing the historical stockpiles over time. ”Cai Jinhai said. Taishan Gypsum (Xiangyang) Co., Ltd. is a newly established enterprise in the city that specializes in the comprehensive utilization of phosphogypsum. Liu Junkai, the head of the company’s comprehensive department, told reporters that 30% of the raw materials used in the products are desulfurization gypsum, while 70% is phosphogypsum. These two raw materials are first calcined at 400 degrees to be rendered harmless, and then substances such as corn starch are added to increase their viscosity and strength; thus, gypsum boards suitable for use in construction are produced. In Xiangyang, 300,000 tons of gypsum are consumed each year. On April 12 this year, the executive meeting of Xiangyang City studied and approved in principle the \"Implementation Opinions on Supporting the Comprehensive Utilization of phosphogypsum\". In accordance with the implementation guidelines, the city’s **has allocated a special fund of 30 million yuan per year for the comprehensive utilization of phosphogypsum, with this amount included in the annual budget. It is used to finance new construction, renovation, and expansion projects carried out by enterprises engaged in the comprehensive utilization of phosphogypsum, as well as research and development of related products. The goal is to eliminate the existing stock of phosphogypsum within about 10 years.

There’s no waste; it’s just about figuring out how to make use of it

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