Abstract:
An horticultural blend is disclosed. The horticultural blend includes coal refuse and slag blended with at least a portion of the coal refuse. The coal refuse has a particle size, the particle size corresponding with all material in the coal refuse having a maximum dimension of less than about 2 inches and at least about 25% of the material in the coal refuse being capable of passing through a standard number 4 sieve. The horticultural blend has a pH within a range of about 3.5 and about 10 and the horticultural blend facilitates growth of vegetation when applied to a coal refuse pile at a thickness of less than about 2 feet.
Abstract:
The present disclosure describes an agricultural blend and a process of forming an agricultural blend. The agricultural blend includes a slag by-product from a process having a slag other than stainless steel slag or includes 11 atomic % silicon from a soluble compound and total silicon of less than about 30 atomic % silicon or greater than about 39 atomic % silicon. The process includes producing a slag by-product and blending the slag by-product with a liquid binder system to form the agricultural blend, the slag not being stainless steel slag.
Abstract:
The invention relates to a method and an arrangement for wastewater treatment, in which at least portions of the sewage sludge contained in the wastewater (0) are subjected to a hydrolysis (8). The hydrolysis (8) is carried out as a thermal hydrolysis. After the hydrolysis step (8), a drying process is (19) carried out. The drying process (19) is a process operating with positive pressure in the steam region. At least parts of the steam resulting from the drying process (19), which operates with positive pressure, are fed (20) to the portions of the sewage sludge in the thermal hydrolysis (8).
Abstract:
Agricultural blends are described. The agricultural blend includes synthetic gypsum having ammonium sulfate and a by-product of slag, the slag being selected from the group consisting of steel slag, stainless steel slag, alloy steel slag, carbon steel slag, and phosphate slag. Additionally or alternatively, the agricultural blend is delivered to soil, is a mineral soil amendment, is a soil conditioner, is a liming agent, is an additive to increase soil pH, is an additive to decrease metal toxicity, or a combination thereof.
Abstract:
A method for reducing above ground storage of phosphate slimes waste obtained in the hydraulic mining of phosphate mineral where said waste, contains at least 2 weight percent solids, is treated by admixing the waste with fertile topsoil to form about a 30 weight percent slurry of topsoil, which topsoil contains at least 50 parts per million of extractable organic flocculating agents; transporting, depositing, and settling the slurry; and separating water from the resultant sediment.
Abstract:
An agricultural blend, an agricultural binder system, and a process of forming an agricultural blend are described. The agricultural blend includes a binder system having soy polymer and one or both of metal slag by-product and synthetic gypsum. The agricultural binder system includes soy polymer. The agricultural binder system is a powder. The process of forming an agricultural blend includes blending a binder system having soy polymer with one or both of metal slag by-product and synthetic gypsum to form the agricultural blend.
Abstract:
An agricultural blend, an agricultural binder system, and a process of forming an agricultural blend are described. The agricultural blend includes a binder system having soy polymer and one or both of metal slag by-product and synthetic gypsum. The agricultural binder system includes soy polymer. The agricultural binder system is a powder. The process of forming an agricultural blend includes blending a binder system having soy polymer with one or both of metal slag by-product and synthetic gypsum to form the agricultural blend.