phosphogypsum raw material characteristics of the study of the strength of plaster powder products

Recycling of Oily Sludge as a Roadbed Material …

Recycling of Oily Sludge as a Roadbed Material …

2017-2-3 · The aim of this study is to determine the inf-luence of the setting activators on the properties of phosphoanhydrite. EXPERIMENTAL Phosphogypsum (dihydrate calcium sulphate), a waste material of phosphoric acid production (from the Kola apatites) was the main material in the inves-tigation. It was taken from the stockpiles of ortopho-

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MATERIAL AND CHEMICAL TECHNOLOGIES, …

MATERIAL AND CHEMICAL TECHNOLOGIES, …

Utilization of PG as raw and calcined material in manufacturing of other building products, to prepare non-fired bricks, mixing PG with fly ash for building roads etc. was also investigated [4, 12 ...

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Model main object clause of more than 500 types of ...

Model main object clause of more than 500 types of ...

The invention relates to a high-strength water-proof gypsum plaster and a production method thereof. The inventive high-strength water-proof gypsum plaster is made from the following materials in weight proportions: 10-99% of gypsum-based composite binding agent, 0-90% of aggregates, 0.08-4% of additives and 0-16.1% of adsorbent. The production method comprises the following steps: weighing ...

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WO2013177637A1

WO2013177637A1

Water_soluble P 2O 5 ia a main harmful impurity in phosphogypsum. By means of DSC, SEM, atom absorption spectra and constitution water, as well as the macro_property measurements, the forms and distributions of water_soluble P 2O 5 and its effects on ...

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Thermal dehydration kinetics of phosphogypsum | …

Thermal dehydration kinetics of phosphogypsum | …

of the rest of the world looked at phosphogypsum as a valuable raw material and developed process to utilize it in chemical manufacture and building products, India blessed with abundant low-cost natural gypsum piled the phosphogypsum up rather than bear the additional expense of utilizing it as a raw material. Chat Online

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Investigation on the Deterioration Mechanism of …

Investigation on the Deterioration Mechanism of …

2014-6-19 · The modern building industry can utilize not only natural gypsum, as commonly done in the past, but also other forms of gypsum that appear as waste secondary raw material from various sources, such as phosphogypsum and fluorgypsum [5] [6] , red gypsum [7] and flue-gas desulfurization gypsum [8] .

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Phosphogypsum waste as additives to lime …

Phosphogypsum waste as additives to lime …

The analysis of Zhang et al. shows that the effect of retarder on the compressive strength of cast-in-situ phosphogypsum is great. Therefore, the mix proportion of cast-in-situ phosphogypsum is as follows: 80% phosphogypsum, 17% phosphorus slag powder, 3% hydrated lime, 10% cement, 0.6% water reducer, and 0.3% retarder.

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New Approaches in X-ray Phase Analysis of Gypsum …

New Approaches in X-ray Phase Analysis of Gypsum …

2010-10-1 · The strength development of the solidied material The strength development of the steel slag–y ash–phosphogypsum solidied material is studied comparing with the typical road base materials and sub-base materials widely used in China, e.g. cement stabilized

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Complex Processing of Phosphogypsum – a Way of …

Complex Processing of Phosphogypsum – a Way of …

Read "Characterization of the Tunisian phosphogypsum and its valorization in clay bricks, Construction and Building Materials" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Utilization of original phosphogypsum as raw material …

Utilization of original phosphogypsum as raw material …

The study involved utilization of an industrial waste, Phosphogypsum (PG), as an additive to lime stabilization of an expansive soil. Three lime dosages, namely, initial consumption of lime (ICL), optimum lime content (OLC), and less than ICL (LICL), were identified for the soil under study for stabilizing the soil. Along with lime, varying doses of PG were added to the soil for stabilization.

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Gypsum Mineral | Uses and Properties

Gypsum Mineral | Uses and Properties

 · Waste recycling with increasing the lifecycle of resource is a novel approach for enhancing circular economy. Within this context, this study aims to give a second life cycle to phosphogypsum (PG) waste, which is a by-product from phosphoric acid manufacture, as useful resources. This study evaluates the sustainability of this harmful waste, which is accumulated in large stockpiles and …

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Uses for Gypsum Powder Sciencing

Uses for Gypsum Powder Sciencing

Recycling phosphogypsum (PG) for cemented paste backfill (CPB) has been widely used at phosphate mines in China. However, the impurities in PG prolong the setting time and reduce the uniaxial compressive strength (UCS), limiting the engineering application of PG. This paper aims to investigate the feasibility of treated PG (TPG) washed repeatedly using deionised water (DW) for CPB.

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Study on the Properties of Waste Apatite …

Study on the Properties of Waste Apatite …

Marble processing is generating a large amount of slurry waste which poses serious impact on the environment. This study was conducted with the objective to demonstrate the practicability of using marble slurry wastes in the manufacturing of cement on commercial scale. Waste marble slurry was obtained from marble processing units and compares it with the calcium carbonate used in the cement ...

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Study on the Properties of Waste Apatite …

Study on the Properties of Waste Apatite …

GB/T 742-2008 造纸原料、纸浆、纸和纸板灰分的测定 Fibrous raw material,Pulp,Paper and board - Determination of ash GB/T 749-2008 水泥抗硫酸盐侵蚀试验方法 Test method for determining capability of resisting sulfate corrode of cement GB/T 753-2012

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