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Mineral Carbonation of Phosphogypsum Waste for Production of …
In principle, the gypsum waste could be used to capture several hundred megatonnes of carbon dioxide (CO 2). For example, when gypsum is converted to ammonium sulfate [(NH 4) 2 SO 4] with ammonia (NH 3) and CO 2, also solid calcium carbonate (CaCO 3) is generated. The ammonium sulfate can be utilized as a fertilizer or in other mineral ...
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8.4 Ammonium Sulfate
8.4 Ammonium Sulfate 8.4.1 General1-2 Ammonium sulfate ([NH4]2SO4) is commonly used as a fertilizer. In 1991, U. S. facilities produced about 2.7 million megagrams (Mg) (3 million tons) of ammonium sulfate in about 35 plants. Production rates at these plants range from 1.8 to 360 Mg (2 to 400 tons) per year. 8.4.2 Process Description1
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US8758719B2
The process for conversion of FGD gypsum to ammonium sulfate and calcium carbonate by the reaction with ammonium carbonate is by a unique combination of countercurrent flows with …
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Ammonium sulfate and the methods of production- Shimico blog
This substance is naturally formed in the form of a rare mineral called maskagenite in volcanic vapors and as a result of burning coal in its remains.
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June 2, 1953 S. P. ROBINISON 2,640,757 PRODUCTION …
aspects it relates to the production of ammonium Sulfate and by-product calcium carbonate by the MerSeberg proceSS modified to utilize a maximum ... of the gypsum to ammonium Sulfate and calcium carbonate in this zone and to lower the pH below 8.0. Depending on the temperatures and :the concentration of dissolved Solids, the first ...
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(12) United States Patent Hasinoff et al. (45) Date of Patent: …
This invention relates to the efficient, low cost production of high purity ammonium Sulfate and calcium carbonate from gypsum. The gypsum may be from any source, whether ... nitrate is then reacted with ammonium sulfate to yield ammonium nitrate and gypsum as shown in the following reactions: Whether the phosphate rock is treated with sulfuric ...
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CN1880224A
The invention refers to a co-production technique of two inorganic chemicals, that is co-production technique of barium chloride, potassium sulfate in calcium sulfate -ammonia circulating method in detail. That includes: (1) mixing the witherite and ammonium chloride for ore pulp, heating and evaporating for NH3,CO2 gas, and barium chloride; (2)sprinkling water on NH3,CO2 gas to …
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TECHNICAL flPR 19 CJ SZjt' Project Title: FGD-GYPSUM
V. Evaluate the impact of continued use of FGD-gypsum-derived ammonium sulfate on soil chemical properties. VI. Establish a process flow sheet for the production of ammonium sulfate from FGD gypsum and evaluate the production costs and the market potential for the product. This project is a cooperative effort among the ISGS, UIUC, AUiedSignal, SE-ME,
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Phosphogypsum Two-Step Ammonia-Carbonation Resulting in Ammonium
In parallel, a comparative study between the conversion process of the synthetic gypsum (SG) and PG shows that the two samples are similar. ... (CaCO 3) production, a very useful material necessary for the cement production. Ammonium sulfate (NH 4) 2 SO 4, thus produced, is widely used as an excellent source of nitrogen (N) ...
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Kinetics of the conversion reaction of gypsum with ammonium …
The reactivity of flue gas desulphurization gypsum with ammonium carbonate has been studied in the temperature range (20–50) °C. Mechanism of this reaction was suggested and the kinetics parameters characterizing the reaction were determined. A mathematical model suitable for the prediction of the conversion of gypsum was proposed. The reaction is of the …
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Ammonium Sulfate | Formula, Properties & Application
Production of Ammonium Sulfate. Ammonium sulfate is produced on a large scale worldwide, with several methods being used based on availability of raw materials and economic viability. ... Ammonium sulfate is also produced from gypsum, which is calcium sulfate dihydrate (CaSO 4 • 2H 2 O), via the Haber process. This involves first converting ...
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Manufacture of ammonium sulfate from gypsum
ammonium sulfate is manufactured from gypsum by a continuous process in which an aqueous flow of material is continously recycled along a predetermined closed circuit defined by a conduit and a...
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Manufacture of ammonium sulfate fertilizer from FGD-gypsum.
Establish a process flow sheet for the production of ammonium sulfate from FGD gypsum and evaluate the production costs and the market potential for the product.
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Novel ammonia recovery from anaerobic digestion by integrating …
The production of ammonium sulfate from gypsum has been studied in coal power plants to capture carbon dioxide (CO 2) from flue gas.Millions of tons of gypsum are produced each year in the US as by-products from the flue gas desulfurization (FGD) scrubbing of sulfur dioxide during coal combustion (Watts and Dick, 2014).There is also a tremendous supply of …
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Material Balance of Ammonium Sulphate Production
The document outlines calculations to determine the raw material requirements for a 300 tonne per day ammonium sulphate plant operating 24 hours per day. It details the chemical reactions involved and calculates that 12,500 kg of ammonium sulphate must be produced per hour. Taking into account process losses, 12,400 kg/hr is the required production rate. Based on this and …
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Ammonium Sulfate Market Forecasts to 2030
Ammonium Sulfate Market Forecasts to 2030 - Global Analysis By Product Type (Solid and Liquid), Production Process (Chemical Processes, Gypsum and Other Production Process), Application, End User, Distribution Channel and By Geography - According to Stratistics MRC, the Global Ammonium Sulfate Market is accounted for $3.6 billion in 2024 and is …
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Production and manufacturing process of ammonium …
Another method of making ammonium sulfate is to produce this product from gypsum. In this process, gypsum and ammonium carbonate are mixed, and calcium carbonate is precipitated. In this method, ammonium sulfate remains …
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AMMONIUM SULFATE PRODUCTION
AMMONIUM SULFATE PRODUCTION Filed Dec. 29, 1948 3. Sheets-Sheet 2 A/G. 3 CARYS7A///WA AMMOW/UM SU/AA7A INVENTOR, SAM. P. ROBINSON BY ... Solutions containing same; and the gypsum process wherein calcium Sulfate is reacted with ammonium carbonate. The products of either of these two processes are essentially the same,
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Production of ammonium sulfate fertilizer from FGD-gypsum
The overall goal of this study is to assess the technical and economic feasibilities for producing marketable products including fertilizer-grade ammonium sulfate from gypsum produced as part of lime/limestone flue gas desulfurization (FGD) processes. Millions of tone of FGD-gypsum by-product may be produced in this decade as a result of the 1990 Clean Air Act Amendments. In …
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US20140044619A1
Definitions. This invention relates to the production of ammonium sulfate and calcium carbonate from gypsum obtained from flue gas desulfurization (FGD) systems located at electric power plants. While FGD gypsum provides a cheap source of gypsum, the physical structure of the gypsum crystalline particles may have characteristics that make it difficult to react with other …
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MANUFACTURE OF AMMONIUM SULFATE FROM GYPSUM
A fresh aqueous gypsum slurry comprising a dis persion of finely divided gypsum in an ammonium sulfate 20 solution is continuously introduced into the flowing mate rial and followed by …
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US2788269A
a process for the production of ammonium sulfate which comprises reacting anhydrous calcium sulfate with gaseous ammonia and gaseous cabon dioxide at a ... results which on drying at atmospheric temperature is the same as that produced by the action of anhydrous calcium sulfate and ammonium carbonate. Since gypsum contains 2 molecules of water ...
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Ammonium sulfate preparation from phosphogypsum waste
Semantic Scholar extracted view of "Ammonium sulfate preparation from phosphogypsum waste" by A. Kandil et al. ... Utilization of natural gypsum for the preparation of ammonium sulfate. Avanish Kumar S. Dubey. ... is a byproduct of the phosphate fertilizers manufacture. The world production estimated to 200 million tons per year induces ...
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Red gypsum utilization and acidic wastewater treatment based on …
It is often called the Merseburg process that the production of ammonium sulfate by gypsum. And there have been some researches on the conversion of waste gypsum, such as PG (Msila et al., 2016), red gypsum (Azdarpour et al., 2018) and FGD gypsum (Danielik et al., 2019). However, most of the current researches focus on the efficiency of the ...
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Manufacture of ammonium sulfate fertilizer from FGD-gypsum
The goal of this study is to assess the technical and economic feasibility of producing marketable products, namely fertilizer-grade ammonium sulfate and calcium carbonate, from gypsum produced as part of lime/limestone flue gas desulfurization (FGD) processes. Millions of tons of FGD-gypsum by-product will be produced in this decade. In this study, a …
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Utilization of natural gypsum for the preparation of ammonium sulfate
The Egyptian phosphogypsum waste is treated using sulfuric acid prior the ammonium sulfate production. The relevant factors that would affect the removal efficiencies of some impurities are ...
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Manufacture of ammonium sulfate fertilizer from FGD-gypsum.
Conversion of FGD- gypsum to ammonium sulfate was tested at 60-70{degree}C for 5-6 hr. Yield up to 82% and purity up to 95% were achieved for the ammonium sulfate production. During this quarter, more bench-scale experiments including a mass balance analysis were conducted; a yield up to 83% and up to 99% purity were achieved.
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US8758719B2
Definitions. This invention relates to the production of ammonium sulfate and calcium carbonate from gypsum obtained from flue gas desulfurization (FGD) systems located at electric power plants. While FGD gypsum provides a cheap source of gypsum, the physical structure of the gypsum crystalline particles may have characteristics that make it difficult to react with other …
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Manufacturing method of ammonium sulfate
{Manufacturing method of ammonium sulfate} The present invention relates to a method for recycling an aqueous solution of ammonium p-nitrate. More particularly, the present invention relates to a method for recycling an aqueous ammonium sulfate solution produced from gypsum, in particular, waste rock (CaSO 4 · 2H 2 O) It is about how you can do it.. It is called "chemical …
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Study on The Production of Ammonium Sulfate Fertlizer …
The production of ammonium sulfate fertilizer from phosphogypsum is studied. The phosphogypsum is considered by product from extraction process of sulphoric acid. The mereseberg process is used a waste of phosphogypsum with ... sulfate, (NH 4)2S0 4, from gypsum (or anhydrite) is a very old technology, first developed by I.G. Farben
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