US5211928A - Method of improving gypsum slurry filtration ...
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.
Novel rheological modifiers - Global Gypsum
During the process of forming the gypsum slurry in the pin mixer of a wallboard line, the consistency of the slurry must be maintained within certain limits to allow proper component mixing, flowout on the forming table and forming plate, dehydration and set, crystal formation and proper drying through the kiln without board defects.
US8177541B2 - Gypsum board forming device with improved ...
Disclosed is a gypsum board forming device which provides improved slurry spread. The device includes a forming table with an arcuate or angled profile that promotes a uniform slurry spread. An arcuate or angled hinge plate can also be included to further promote the uniform distribution of slurry prior to an extrusion plate. As a result of the improved slurry spread, gypsum board with ...
Gypsum - an overview | ScienceDirect Topics
Gypsum board is primarily used as a finish for walls and ceilings, and is known in construction as drywall or plasterboard. Gypsum is also an ingredient of surgical splints, casting molds and modeling, utilizing the property of coagulation. Furthermore, gypsum is used for …
USG Gypsum Misconceptions White stone (English) - IG1847
GYPSUM MISCONCEPTIONS ... the water used to create the slurry. Two factors have the most profound effect on the final strength of rehydrated gypsum – the amount of water and the aggregate used in the hemihydrate mix. ... USG Gypsum Misconceptions White stone (English) - IG1847 ...
METHOD OF IMPROVING GYPSUM BOARD STRENGTH - …
Jul 05, 2012 · While a particular embodiment of the method of improving gypsum board strength has been shown and described, it will be appreciated by those skilled in the art that changes and modifications may be made thereto without departing from the invention in its broader aspects and as set forth in the following claims.
Slurry handling in FGD plants - World Pumps
Jul 23, 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.
Method of improving gypsum slurry filtration in the ...
May 18, 1993 · 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.
Improving Gypsum Slurry Filtration in the Production of ...
Jul 01, 2012 · The copolymer was used for the filtration aiding in the wet process phosphoric acid. 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.
How Gypsum is Made - AWCI
“slurry,” or paste. This stucco slurry will then be spread onto stone to form wallboard. The “Bread” That Makes the Wall-board Gypsum wallboard is frequently described as a “sandwich,” with gyp-sum being the “meat” and stone being the “bread.” Making the stone for wallboard is as complex a process as making the wallboard itself.
Improving Soil With Gypsum - Garden.org
Jan 05, 2020 · Improving Soil With Gypsum. By Garn Wallace with Shelly Stiles. Tomato (Solanum lycopersicum Indigo Apple) Posted by tveguy3. Gypsum is one of the best sources of calcium, the most important of the secondary plant nutrients. But calcium is more than a nutrient. It is the major balancing element in plants and soils.
The Myth of Gypsum Magic “Adding gypsum to your yard or ...
The Myth of Gypsum Magic “Adding gypsum to your yard or garden will improve soil tilth and plant health” The Myth Upon continued prodding from one of my university extension colleagues, I recently watched several episodes of a well-known gardening program on television. My kids joined me, alerted by …
Wet FGD Chemistry and Performance Factors - WPCA
Wet FGD Chemistry and Performance Factors Gordon Maller – URS Corporation ... Gypsum CaSO 3 Limestone Solubility Temperature. Acids and Bases pH 1 714 ... Waste Slurry Storage Tank Water Gypsum Convertor Belt Filter Wash Water Hydrocyclone …
Air Pollution Control Technology Fact Sheet
gypsum is removed from the reaction tank prior to the slurry being recycled to the absorber. The recycle slurry has a lower concentration of gypsum and scale formation in the absorber is significantly reduced. Gypsum can be commercially sold, eliminating the need for …
Gypsum Board Research, Formulation and Testing
Gypsum Board Research, Formulation and Testing. Do you have a new additive to evaluate for use in gypsum board or a new idea for an improved gypsum board product? Do you need help in evaluating your plasterboard and want to know how your product can …
A Root Cause Study to Determine the Source of High Gypsum ...
absorber slurry and gypsum samples were collected during full load operation and at the start of a dewatering run. Sample collection continued in 500 ppm increments until a level of 5,500 ppm was reached. If gypsum moisture exceeded 10% consistently during the study, purging operation could resume until moisture was reduced to less than 10%.
Patents Assigned to National Gypsum Properties - Justia ...
Jun 02, 2017 · Abstract: A slurry for manufacturing gypsum board comprises calcined gypsum, water, a foaming agent, and a coalescing agent. The foaming agent imparts a plurality of bubbles in the slurry. Typically, a foam is pre-generated with the foaming agent and the foam is used to form the slurry such that the foam imparts the plurality of bubbles in the slurry.
Improving the removal of fine particles by stone ...
Coal-fired power plants are considered a major source of fine particle emissions in China. Aimed to improve the removal efficiency of fine particles during the limestone-gypsum wet flue gas desulfurization (WFGD) process, a novel technology using stone agglomeration to abate the emission of fine particles is presented herein.
Gypsum Board Production Business Plan Sample Checklist
Gypsum Board Market Opportunities. We have seen a pickup in gypsum board business in recent quarters. The major reason is the improvement of the construction markets as well as a more aggressive pricing strategy among manufacturers. Gypsum-based panels are the most common building blocks used for interior walls and ceilings.