method of improving gypsum slurry filtration in the gypsum filtration
  • Method of producing mixture of very low consistency alpha

    A method of manufacturing a product containing alpha hemihydrate of calcium sulfate beta hemihydrate of calcium sulfate, which includes stages: feed 50-75 wt.% the gypsum slurry in the first reactor, and the slurry contains the dihydrate of calcium sulfate and water; calcined slurry in the reactor under conditions sufficient for the formation

    Get Price
  • US20120171099A1 - Phosphoric acid production gypsum

    A method for minimizing the addition of water to a phosphoric acid production process is described. The method uses phosphoric acid to make down a flocculant that is added to the process in order to promote filtration or clarification of crude phosphoric acid. Preferably, the phosphoric acid is a crude, clarified phosphoric acid that is recycled from the phosphoric acid

    Get Price
  • Gypsum Injections into Vineyard Drip Systems

    into the irrigation stream or not enough time is allowed between the injection of the slurry and its arrival at the system filter. In either case undissolved gypsum coats the filter and plugs it. This can be overcome by reducing the concentration rate of the injection and moving the injection point farther upstream from the filter, if possible.

    Get Price
  • Wet Flue Gas Desulfurization with Lime/Limestone Slurry

    The slurry is then pumped into the absorption zone again. By blowing air into the absorber sump, gypsum is formed from the calcium sulphite and is removed from the process as a component of the slurry. Depending on the quality requirements for the end product, further treatment is carried out to produce marketable gypsum. Plant Engineering

    Get Price
  • Method of producing mixture of very low consistency alpha

    A method of manufacturing a product containing alpha hemihydrate of calcium sulfate beta hemihydrate of calcium sulfate, which includes stages: feed 50-75 wt.% the gypsum slurry in the first reactor, and the slurry contains the dihydrate of calcium sulfate and water; calcined slurry in the reactor under conditions sufficient for the formation

    Get Price
  • Flue gas desulphurization | IDRECO S.r.l.

    The bleed system consists essentially of an absorber bleed pump and a gypsum cyclone battery, supplied with absorber slurry by the absorber bleed pump. The underflow of the cyclones flows to the mechanical dewatering (vacuum belt filter or centrifuge) that produces dry commercial gypsum with a maximum water content of 10%.

    Get Price
  • Improving Gypsum Slurry Filtration in the Production of

    The filtration rate of the gypsum slurry is increased by 4.8 times, and the filter cake moisture is reduced by 11.79%, with the addition of PADB. The mechanism of filtration aiding was also researched, which shows that PADB can change the mean diameter of crystals and agglomerate the tiny crystals; PADB can decrease the surface tension of the

    Get Price
  • Effect of Ionic Impurities on the Crystallization of

    The dihydrate phosphoric acid production process was simulated in a bench-scale glass reactor. The influences of selected ionic contaminants (Na+, K+, Mg2+, Al3+, F-, and Fe3+) on the crystallization of the gypsum byproduct were investigated. Except for fluorine, the presence of the impurities aided gypsum precipitation, with iron and potassium showing the greatest effect.

    Get Price
  • US Patent for Method for producing phosphoric acid and by

    Provided is a method for producing phosphoric acid and at the same time obtaining alpha-hemihydrate gypsum including: adding a phosphate rock powder and a part of dilute sulfuric acid into an extraction tank, carrying out an extraction reaction on same, separating a clear liquid from the obtained mixed slurry, sending the clear liquid, as a finished product phosphoric acid, into

    Get Price
  • Yoshino Gypsum Co., Ltd.

    Gypsum slurry in a kneading area (51) is introduced into the straight conduit path forming a straight flow path. The straight conduit path rectifies the flow of the gypsum slurry into an axial flow or a straight flow (S), and the axial flow or the straight flow is divided into branched flows (S1 and S2) by the countercurrent dividing element.

    Get Price
  • Gypsum solubility in seawater, and its application to

    Dec 15, 2004· Therefore, due to the long pumping times (20 min) and comparatively rapid dissolution rates (reaching saturation within 15 s (AR) to 30 min (MG > 2.0mm)) the application of gypsum to the residue sand/seawater slurry is an inefficient method of improving the Ca status of residue sand with only 5% of the total Ca in solution adsorbed and the

    Get Price
  • System And Method For Producing A Gypsum Slurry - The Lens

    Dec 22, 2015· recirculating the third gypsum slurry to the mixing device via a second slurry passage fluidly coupling the separation tank and the mixing device. The method of claim 1, wherein providing the gypsum to the mixing device comprises measuring a first rate that the gypsum is provided to the mixing device using a mass flow meter.

    Get Price
  • Investigation of the gypsum quality at three full-scale

    Oct 01, 2011· The operating conditions and the resulting gypsum quality at three full-scale FGD plants and one pilot plant (listed in Table 1) were investigated during this campaign.Slurry samples were withdrawn and analysed in terms of PSD, morphology and liquid phase composition, while the process monitoring equipment provided data on the flue gas flow, temperature, SO 2 concentration and slurry

    Get Price
  • what is gypsum slurry - ME Mining Machinery

    Slurry handling in FGD plants - World Pumps. 23/07/2009 The light gypsum slurry is transferred to the wastewater treatment plant, after which the treated wastewater is disposed of. Wet scrubber FGD plants play a critical role in reducing emissions of sulphur dioxide from coal-burning power stations. System And Method For Producing A Gypsum

    Get Price
  • Effect of additives on mercury partitioning in wet

    A slurry sample was taken at the end of each run and filtered using a paper filter, with a particle retention of 5–13 µm, to separate the filtrate and gypsum from each other. Filtrate samples were stabilized by the addition of 10 vol.-% hydrochloric acid and gypsum samples were dried at 40°C and ground to have a homogenized sample.

    Get Price
  • Filtration + Separation - the online magazine for the

    Jul 15, 2020· About Filtration + Separation. Launched back in 1963, Filtration + Separation has long been established as the essential information tool for filtration users worldwide. Filtration + Separation is at the forefront of technological advances, market movements, trends and breaking industry news.

    Get Price
  • convert fgd gypsum into ammonium sulphate

    The scrubber a Chiyoda Thoroughbred 121 FGD produced a filter cake product contains 9836% gypsum (CaSO{sub 4}2H{sub 2}O) and less than 001% calcium sulfate (CaSO{sub 3}) Conversion of FGD gypsum to ammonium sulfate were tested at temperatures between 60 to 70{degrees}C for a duration of five to six hours

    Get Price
  • Method of preparation of gypsum cement-puzzolan mix

    FIELD: construction. SUBSTANCE: method of obtaining of gypsum cement-puzzolan mix includes hydroactivation of portland cement with surfactants for 1 min. with the subsequent adding of gypsum and puzzolan component and repeated hydroactivation within 2 min., in the rotor and pulsation device with a shaft speed of rotation no less than 5000 rpm, the surfactant is a mix of polymeric

    Get Price
  • ENHANCING FILTRATION RATE OF NEW VALLEY OXIDIZED

    methods for the chemical analysis of phosphates, phosphoric acid and gypsum were reported (Young, 1971). Calculations of filtration rate, reaction efficiency and P 2 O 5 recovery The total filtration time is defined as a sum of the filtration time of product acid and washing time of gypsum.

    Get Price
  • Properly Monitor Your Scrubber Chemistry | Power Engineering

    Jul 01, 2008· The molecular weight of gypsum is 172 and that of the water forced out is 36, so the initial gypsum content is determined by multiplying the weight loss (5.772 percent) times a factor of 172 ÷ 36

    Get Price

CONTACT US

  • Address:

    No.416 Jianye Road, South Jinqiao Area, Pudong,Shanghai, China

  • Phone:

    +0086-21-58386256 +0086-21-58386258

  • Email:

    [email protected]