المنتجات الساخنة
EPA Approves Use of Phosphogypsum in Road
Risk analyses conducted by TFI, and reviewed by the EPA, demonstrate that the proposed use of phosphogypsum in road construction is as protective of public health, in both the short- and long-term, as is disposal of phosphogypsum in a stack.
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The Use of Phosphogypsum as a Filler for Thermoplastics,
2018. 2. 17. Filling of polyolefins with phosphogypsum is intended to enhance polyolefins mechanical tensile properties. Phosphogypsum-filled compositions were studied with a view to substituting them for talc- or whiting-filled compositions. The polypropylene-based compositions are likely to find concrete application in the automotive industry.
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Approval of Other Uses of Phosphogypsum: Supporting
EPA released a Federal Register Notice “Approval of the Request for Other Use of Phosphogypsum by The Fertilizer Institute,” publicizing the approval of the use of phosphogypsum in government road construction projects. View the official notice in the Federal Register (85 FR 66501, October 20, 2020).
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The use of phosphogypsum in Syrian cement industry:
2013. 4. 1. Phosphogypsum is a byproduct of phosphate industry, in Syria. Its production is about 4–5 tons for each one ton of phosphoric aside produced in the factory (Odat et al., 2008). Sulfuric acid is added to limestone to produce phosphoric acide. As a result hydrate calcium sulfate is produced (phosphogypsum, CaSO 4 ⋅2H 2 O).
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Phosphogypsum Wikipedia
Phosphogypsum refers to the calcium sulfate hydrate formed as a by-product of the production of fertilizer from phosphate rock. It is mainly composed of gypsum (CaSO4·2H2O). Although gypsum is a widely used material in the construction industry, phosphogypsum is usually not used, but is stored indefinitely because of its weak radioactivity caused by the presence of naturally occurring uranium and thorium, and their daughter isotopes radium, radon, polonium, etc. The long-range storage is controversial. Somewher
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The Use of By-Product Phosphogypsum for Road Bases and
used as stabilizing agents for phosphogypsum. The phosphogypsum was collected from two different stockpiles at the same storage site. Design, con struction, and evaluation of seven experimental test sections resulted from the laboratory study. MATERIALS Phosehogypsum (PG)
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Phosphogypsum An Industrial Byproduct with Value
Phosphogypsum has been studied for use in cement, bricks, plaster, and more, often with added benefits over virgin materials. When used as a replacement for limestone, for example, phosphogypsum has proven to offer a better roadbed.
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EPA Approves Use of Phosphogypsum in Roads
Phosphogypsum presents several beneficial reuse opportunities, including use as a soil amendment and natural gypsum alternative, as well as use in construction materials such as bricks, cement, plaster, and more. The Fertilizer Institute’s request focused specifically on the use of phosphogypsum
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Composite Building Materials with the Use of
Nowadays waste dumps of phosphogypsum take about 1500 hectares of fertile land and amount to 300 mln tonnes. Existing methods of processing are too labour-and energy-consuming, what didn’t lead to widespread use of phosphogypsum. Phosphogypsum waste continue to be stored in waste dumps, disperse on the wind and create ecological problem in the regions of storage.
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(PDF) Purification of South African phosphogypsum for use
9 Recently, scientists in North Africa are trying to use phosphogypsum in the manufacture of bricks to satisfy the high demand of housing. 10,11 Phosphogypsum is finding an increasingly widespread
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