Premier Magnesia, LLC

Premier Chemicals, LLC

Mark Alexander Shand

Jerry Elliot Rademan

John K Gehret

Claudio E Manissero

Jerry Elliott Rademan

James Preskenis

Ronald Wardle

Neal Steven Berke

Thomas M Miller

Joe Christopher Brown

Peyton L Pool, Sr

James O Williams

Glenn Eugene Schaefer

Shawn R McGillivray

Peyton Pool, Sr

A geopolymer cement and a method of producing the same are provided. A geopolymer cement binder may be provided including a geopolymer precursor and magnesium oxide as an alkali activator. The geopolymer cement binder may be mixed with water using high shear mixing.

Geopolymer cement

A high solids magnesium hydroxide slurry may be provided. The slurry may include a magnesium hydroxide compound and a carbohydrate-based viscosity control agent. The slurry may further include sea water as at least a portion of the liquid component. The high solids magnesium hydroxide slurry may be utilized in connection with exhaust scrubber systems for removing SOx and NOx compounds from exhaust gas emissions.

High solids magnesium hydroxide sea water slurries

Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900&#xb0; F. to about 1800&#xb0; F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described.

Magnesium phosphate cement

Portland Cement-based concretes and mortars exhibit significant reduction in shrinkage cracking when combined with Magnesium Oxide (MgO), Shrinkage Reduction Admixtures (SRA) and Super Absorbent Polymers (SAP). However, MgO is a solid that reacts with water, SRA is a liquid, and SAP if not added properly could pull water out of the system and thus increase shrinkage. Unique admixture blends used as supplementary cementing materials that do not significantly affect concrete or cement strength properties of Portland cement itself address such issues. Proper ratios of MgO, SRA and/or SAP perform better against crack reduction when compared to commonly used Expansive Cements (EC).

Admixtures for shrink crack reduction of portland cement-based mortars and concretes

Despite the excellent properties associated with Magnesium OxyChloride (Sorel) based cements and Magnesium OxySulfate based cements, water and corrosion resistance has been limiting factors for achieving greater commercial applications. Such issues can be addressed by incorporating various alkali metal phosphates, such as Magnesium mono- or dihydrogen phosphate (MgHPOor MgHPO) with alkali metal fatty acids; such as Magnesium Stearate; and metal or alkali metal sulfates such as Aluminum Sulfate or Magnesium Sulfate. Water resistance is further enhanced by either pre-carbonating the mix water or the liquid magnesium chloride phase of the cements, or by adding a carbonate into the powder phase. Accelerated cure of this system has also been obtained by using various inorganic metal oxides. Additionally, improved corrosion resistance is achieved through the use of certain phosphates, zeolites, nitrites and other novel additives.

Method and compositions for improving performance properties of magnesium oxychloride cements

A method of using a mixture as an amphoteric buffer is disclosed comprising mixing sulfuric acid, magnesium oxide and/or magnesium hydroxide, and water to form an amphoteric buffer, and applying the buffer to a spill of an acid or alkali so as to neutralize the spill.

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Arden, NC, United States of America

Mark Alexander Shand