Other

Mountain Develpoment

Vista Ferrous Sulfate, Ltd.

Thomas C Shutt

L Wayne Snider

Richard H Eaman

A method for producing an improved fire retarding compound for use with cellulose insulation materials uses the same concept as boric acid and borax, but substitutes liquid borates rather than powdered borates. Such liquid borates enables the amount of chemical to be reduced by approximately fifty percent. This offsets the high cost of the use of borates. Additionally, the inexpensive borate, borax, is the only boron containing chemical used in the present invention method and it is converted to boric acid once impregnated inside the cellulose insulation material.

Method for producing cellulose insulation materials using liquid borate

A method for treating cyanide-contaminated water in order to remove dissolved (e.g. free) cyanide (HCN and/or CN.sup.-) therefrom. Cyanide-contaminated water is a significant problem in the gold processing industry wherein cyanide compounds are used to remove gold from ore. The remaining cyanide solution after gold extraction is treated to reduce free cyanide levels therein by combining the solution with a crystalline waste by-product of the metal galvanizing industry having the following formula: (Fe.multidot.Zn)SO.sub.4 .multidot.7H.sub.2 O. This material preferably has a zinc content of about 1-14% by weight, and is added to the water in an amount equal to about 1-5 pounds per ton of ore being processed. As a result, a stable, solid, non-toxic complex is produced from the toxic free cyanide materials. This is accomplished without the generation of harmful acids, heavy metals, excessive iron levels or other undesired by-products.

Method for detoxifying cyanide-containing water

A pelletized ferrous sulfate monohydrate (FeSO.sub.4 .multidot.H.sub.2 O) product and method for the manufacture thereof. Hard, spherical ferrous sulfate monohydrate pellets are manufactured by combining ferrous sulfate monohydrate powder with an aqueous solution of ammonium sulfate (NH.sub.4).sub.2 SO.sub.4 having a preferred concentration of about 1-40% by weight ammonium sulfate. Mixture of these components occurs in a conventional pelletizing apparatus (e.g. a disc pelletizer) which produces individual pellets from the components. The pellets are then heated in order to remove excess water therefrom. The foregoing process enables durable pellets to be made without substantial hydration of the ferrous sulfate monohydrate. The pellets are spherical, have a size of about -6+20 U.S. standard mesh, and have not less than about 25% by weight soluble Fe.

Pelletized ferrous sulfate monohydrate product and method for making the

Fire retardant compositions in pelletized and in aqueous solution form constituting mixtures containing in a ratio by weight about 30-50% monoammonium phosphate and 70-50% diammonium phosphate, and optionally a corrosion inhibitor, which in solution form are of substantially neutral pH and contain in a 10-part ratio by weight about 3-7.9 parts total monoammonium phosphate and diammonium phosphate and 7-2.1 parts of water, and optionally a surfactant;

Methods for producing fire retardant cellulosic products

Admixture of unsaturated polyester and finely ground powder particles of soda-containing silicate glass, preferably soda-lime-silicate glass, e.g. below about 40 mesh and in an amount of between about 1 to 60% based on the weight of the polyester-glass particle admixture, providing improved properties in the ultimately cured resin at lower material costs and having special application as a composition for use in fabricating fibrous glass (i.e. fiber-glass) reinforced plastics composite products.

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Denver, CO, United States of America

Thomas C Shutt