If you have any questions, please contact this email[email protected]

MORE PRODUCTS

  • US5211928A - Method of improving gypsum slurry

    A method for improving gypsum slurry filtration in the production of wet process phosphoric acid wherein an effective amount of carboxylic-type polymer having a portion of sulfonic functionality is used as the filtration aid. Preferred polymers are high molecular weight polymers of acrylic acid and acrylamido methylpropyl sulfonic acid.

  • Cited by: 9
  • method of improving gypsum slurry filtration in the

    Method of improving gypsum slurry filtration in the Yong Liu De Jun Fei Ya Gu Dang Jian Xun Wu Guang Chao Du Improving Gypsum Slurry Filtration in the Production of Phosphoric Acid by Adding Cationic Amphiphilic Copolymer Advanced Materials Research 2012 550-553 919-926 DOI

  • Method for improving gypsum/phosphoric acid slurry ...

    22.05.2012  Generally, the invention is a polymeric filtration aid method for gypsum removal from phosphoric acid/gypsum slurry where the method comprises injecting a CMC polymer solution into a phosphoric acid/gypsum slurry, wherein said CMC polymer is carboxymethylcellulose comprising a polymerized cellulose ether. A typical time interval between injection of the CMC polymer and filtration

  • Cited by: 2
  • Method of improving gypsum slurry filtration in the ...

    18.05.1993  A method for improving the filtration of a gypsum slurry in a wet process phosphoric acid manufacturing process which comprises adding to a said gypsum slurry an effective amount of a polymer which consists essentially of about 0.5 to about 99.5%, by weight, of: a) an unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, their salts and

  • Flue gases: Gypsum dewatering in desulphurisation -

    IntroductionGypsum Dewatering Process StageMachines For Dewatering GypsumConclusionsWet scrubber processes are most commonly used for flue gas desulphurisation (FGD). As well as SO2 and SO3, HCl and HF, fine particulate matter and some air-borne toxins can be removed simultaneously . Wet FGD technologies can be grouped into those that use calcium-based sorbents, magnesium-, potassium- or sodium-based sorbents, ammonia, and seawater. In particular, limestone-based gypsum processes dominate for large scal在filtsep上查看更多信息
  • METHOD FOR IMPROVING GYPSUM/PHOSPHORIC ACID

    05.01.2012  A chemical process to improve the filtration performance for the removal of gypsum from phosphoric acid/gypsum slurry using a filtration aid that is selected from a class of polymers, lower molecular weight anionic polyelectrolytes, which previously have not been used for this application. The polymer is CMC or Carboxymethyl Cellulose, which is a polymerized cellulose ether. CMC is found to

  • Cited by: 2
  • US20120003140A1 - Method for improving

    A chemical process to improve the filtration performance for the removal of gypsum from phosphoric acid/gypsum slurry using a filtration aid that is selected from a class of polymers, lower molecular weight anionic polyelectrolytes, which previously have not been used for this application. The polymer is CMC or Carboxymethyl Cellulose, which is a polymerized cellulose ether.

  • Cited by: 2
  • Dual injection of two polymeric filtration aids for gypsum ...

    08.07.2008  A process to improve the polymeric filtration aid performance used in removal of gypsum from phosphoric acid/gypsum slurry. A synergistic effect has been observed by using a Dual Injection method. This method more specifically involves using two polymers (A B) of different chemistry and injecting into slurry at a different time. The polymer chemistry of filtration aid A is selected from the ...

  • Improving Gypsum Slurry Filtration in the Production of ...

    01.07.2012  Improving Gypsum Slurry Filtration in the Production of Phosphoric Acid by Adding Cationic Amphiphilic Copolymer p.919. Study of a Real Fluid Flow Axial Symmetry in a Cylindrical Cavity p.929. Study on Thermal Reduction of Phosphate Ore by Carbon in the Fluidized Bed Reactor p.934. Effect of Adding Pump-Around Circuits and Reducing Stripping Steam Flow Rate on the Improving

  • Cited by: 1
  • Improving Gypsum Slurry Filtration in the Production of ...

    Improving Gypsum Slurry Filtration in the Production of Phosphoric Acid by Adding Cationic Amphiphilic Copolymer p.919. Study of a Real Fluid Flow Axial Symmetry in a Cylindrical Cavity p.929. Study on Thermal Reduction of Phosphate Ore by Carbon in the Fluidized Bed Reactor p.934. Effect of Adding Pump-Around Circuits and Reducing Stripping Steam Flow Rate on the Improving Energy

  • WO2007055771A3 - Dual injection of two polymeric ...

    A process to improve the polymeric filtration aid performance used in removal of gypsum from phosphoric acid/gypsum slurry. A synergistic effect has been observed by using a Dual Injection method. This method more specifically involves using two polymers (A B) of different chemistry and injecting into slurry at a different time. The polymer chemistry of filtration aid A is selected from the ...

  • US7396474B2 - Dual injection of two polymeric filtration ...

    A process to improve the polymeric filtration aid performance used in removal of gypsum from phosphoric acid/gypsum slurry. A synergistic effect has been observed by using a Dual Injection method. This method more specifically involves using two polymers (A B) of different chemistry and injecting into slurry at a different time. The polymer chemistry of filtration aid A is selected from the ...

  • TECHNICAL SPECIFICATION FOR GYPSUM DEWATERING SYSTEM

    hydro cyclone feed pump (BHEL scope) supplies gypsum slurry to Primary Dewatering Hydro-cyclones. The primary hydro-cyclone shall be installed above the belt filters. The underflow from primary hydro cyclone is fed to vacuum belt filter for final stage of dewatering gypsum slurry to produce gypsum with moisture content less than 10%.

  • US20070102368A1 - Dual injection of two polymeric ...

    A process to improve the polymeric filtration aid performance used in removal of gypsum from phosphoric acid/gypsum slurry. A synergistic effect has been observed by using a Dual Injection method. This method more specifically involves using two polymers (A B) of different chemistry and injecting into slurry at a different time. The polymer chemistry of filtration aid A is selected from the ...

  • System And Method For Producing A Gypsum Slurry ... -

    The method of claim 1, wherein the gypsum comprises greater than approximately 97 wt % gypsum on a dry basis. ... and filtering the raw irrigation water mixture using a filter to produce a treated irrigation water. The method of claim 11, comprising: receiving the acid via an acid tanker truck from a brackish water electrodialysis plant; receiving the gypsum slurry via a gypsum slurry tanker ...

  • Improving Gypsum Slurry Filtration in the Production of ...

    Download Citation Improving Gypsum Slurry Filtration in the Production of Phosphoric Acid by Adding Cationic Amphiphilic Copolymer A cationic amphiphilic copolymer was synthesized with ...

  • Filtration - Wikipedia

    Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass. Solid particles that cannot pass through the filter medium are described as oversize and the fluid that passes through is called the filtrate. Oversize particles may form a filter on top of ...

  • SEPARATION GYPSUM DEWATERING AT THE HIGHEST LEVEL

    • Dewatering gypsum slurries from FGD plants in coal-fired power plants or waste incinerators • Neutralization gypsum from copper smelters • Additional applications on request PROCESSING PARAMETERS Operation Batch-type filtration Basket diameter 1,000, 1,250, 1,600 mm Basket volume 220-1300 l Filter area 2.0-6.3 m2 Solids content 10-70 % ...

  • Increasing the Filtration Rate of Phosphor-gypsum by

    N.B. Singh (2007), “Calcium sulphate hemihydrate hydration leading to gypsum crystallization†Progress in Crystal Growth and Characterization of Materials 53 (2007) 57e77 [8] Paul R. Clifford (1996), “Enhanced filtration of phosphogypsum†FIPR 01-119-133 [9] ZHANG Lei (2014), “The Effect of Additives on Calcium Sulfate Dihydrate Crystallization Kinetics in Gypsum Type ...

  • SEPARATION GYPSUM DEWATERING AT THE HIGHEST LEVEL

    • Dewatering gypsum slurries from FGD plants in coal-fired power plants or waste incinerators • Neutralization gypsum from copper smelters • Additional applications on request PROCESSING PARAMETERS Operation Batch-type filtration Basket diameter 1,000, 1,250, 1,600 mm Basket volume 220-1300 l Filter area 2.0-6.3 m2 Solids content 10-70 % ...

  • Increasing the Filtration Rate of Phosphor-gypsum by

    N.B. Singh (2007), “Calcium sulphate hemihydrate hydration leading to gypsum crystallization†Progress in Crystal Growth and Characterization of Materials 53 (2007) 57e77 [8] Paul R. Clifford (1996), “Enhanced filtration of phosphogypsum†FIPR 01-119-133 [9] ZHANG Lei (2014), “The Effect of Additives on Calcium Sulfate Dihydrate Crystallization Kinetics in Gypsum Type ...

  • gypsum slurrypump - windsunglas.nl

    Improving Gypsum Slurry Filtration in the Production of , Advances in Chemical Engineering II: Improving Gypsum Slurry Filtration in the Production of Phosphoric Acid by Adding Cationic Amphiphilic Copolymer . BENEFICIAL KEUSE10F FGD GYPSUM IN , Gypsum Slurry Pump Pump , Waste Monitor Water Beneficial Reuse of FGD Gypsum in Agriculture Applications Removing Dried Gypsum

  • FPO IP Research Communities

    Method of improving gypsum slurry filtration in the production of phosphoric acid A method for improving gypsum slurry filtration in the production of wet process phosphoric acid wherein an effective amount of carboxylic-type polymer having a portion of sulfonic functionality... 854 : 10603631

  • Filtration - Wikipedia

    Filtration is a physical, biological or chemical operation that separates solid matter and fluid from a mixture with a filter medium that has a complex structure through which only the fluid can pass. Solid particles that cannot pass through the filter medium are described as oversize and the fluid that passes through is called the filtrate. Oversize particles may form a filter on top of ...

  • Filtration - an overview ScienceDirect Topics

    The filter may be dried by shutting off the slurry feed and spinning the solids to attain residual moisture contents lower than generally provided by filter presses or vacuum filters. Most centrifugal filtration applications are typically conducted in continuous or semi-batch mode in which the liquids passing the filter are continuously discharged and the filter is continuously ...

  • Technologies - purification of the gypsum - Prayon

    You are here Our activities - Technologies - Purification of gypsum Purification of gypsum. Although the Central PRAYON Process can produce merchant grade calcium sulfate directly from the filter, Prayon also offers clean-up downstream from existing dihydrate plants.. This process involves : classification of the gypsum by removing the fine and coarse particles;

  • US Patent for 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 production process itself.

  • Purity Determination in Gypsum Application Note Gypsum

    gypsum plaster gypsum slurry wet product rehardened product final product CaSO 4 • 2H 2O heat (150°C) CaSO 4 • 1/ 2 H 2O + H 2O + additives shaping CaSO 4 • 2H 2O CaSO 4 • nH 2O + nH 2O CaSO 4 • 2H 2O ­nH 2O drying at low temperatures CaSO 4 • nH 2O. Application Note Gypsum Material and Methods Method for determining the purity of gypsum (CaSO 4•2 H 2O) with the HR83 • HR83 ...

  • Increasing the filtration rate of phospho-gypsum using ...

    Increasing the filtration rate of phospho-gypsum using surfactant Article in Hydrometallurgy 119(1):53-58 January 2007 with 591 Reads How we measure 'reads'

  • Filtration + Separation - the online magazine for the ...

    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. It is read by end users who need to source ...

  • (PDF) Increasing the Filtration Rate of Phosphor-gypsum

    Increasing the Filtration Rate of Phosphor-gypsum by Using Mineral Additives . Article (PDF Available) in Procedia Engineering 138:151-163 December 2016

  • SEPARATION EXPERTISE FOR YOUR SUCCESS IN THE IRON ORE

    and filter cloth to spares and personnel costs, day in and day out. Our hyperbaric disc filter, for example, is capable of capacities of 500 t/h with filtration of very fine material – all in one dependable, fully automated machine. The end result? A Whether you’re producing iron ore pellets, filter

  • Utilization of calcium sulfide derived from waste

    added to the simulated wastewater at CaS to Ni molar ratio of 1.3. Moreover, sulfide slurry obtained by adding CaS was characterized by lower average specific filtration resistance and compressibility coefficient, compared to hydroxide slurry formed by the conventional precipitation treatment.

  • vacuum belt filter, dewatering of Gypsum slurry at FGD ...

    30.08.2016  For the Love of Physics - Walter Lewin - May 16, 2011 - Duration: 1:01:26. Lectures by Walter Lewin. They will make you ♥ Physics. Recommended for you

  • 作者: Morselt Watertechniek BV
  • Effect of Ionic Impurities on the Crystallization of ...

    The dihydrate phosphoric acid production process was simulated in a bench-scale 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.

  • Gypsum Slurry, Gypsum Slurry Suppliers and

    Alibaba offers 517 gypsum slurry products. About 23% of these are pumps, 2% are other mining machines. A wide variety of gypsum slurry options are available to

  • Louis Irwin Inventions, Patents and Patent Applications ...

    Method for improving gypsum/phosphoric acid slurry filtration using carboxymethyl cellulose. Patent number: 8182698 Abstract: A chemical process to improve the filtration performance for the removal of gypsum from phosphoric acid/gypsum slurry using a filtration aid that is selected from a class of polymers, lower molecular weight anionic polyelectrolytes, which previously have not been used ...

  • FILTRATION TECHNIQUES - Faculty Websites

    Filtration Techniques Revised 8/6/12 1 FILTRATION TECHNIQUES Filtration, the technique used to separate solids from liquids, is the act of pouring a mixture onto a membrane (filter paper) that allows the passage of liquid (the filtrate) and results in the collection of the solid. Two filtration techniques are generally used in chemical separations in general chemistry lab: "gravity" filtration ...

  • Method for producing carbon fiber-reinforced gypsum

    A process for producing improved gypsum models and molds of high duplication accuracy is provided. In the process, bundles of carbon fibers of specified length and amount having a sizing agent deposited thereon are treated to remove the sizing agent from the carbon fibers which are then separated into single fibers in water. A major part of hemihydrate gypsum (CaSO.sub.4.1/2H.sub.2 O) powder ...

  • * *

    The materials of processing: *

    • Granite
    • Limestone
    • Basalt
    • Pebble
    • Gravel
    • Gypsum
    • Marble
    • Barite
    • Quartz
    • Dolomite
    • Gold Ore
    • Copper ore
    * *

    About US

    we in the more than 30 years of its development process, has formed a unique and content-rich corporate culture. The building of enterprise culture, particularly the aggregation of cohesion and solidarity, is built as power source for the sustainable development of enterprise.

    Copyright © 2004-2019 We All rights reservedsitemap