TH29405A - Taking advantage of sandy waste - Google Patents

Abstract

DC60 carbohydrates were added to the sand. Where it was used to make formwork Or the axis of the casting, and where it has been welded. By utilizing alkaline rychol, phenol, formaldehyde, resin before the utilization of sandy wastes by utilization From waste through heating.Waste utilization with Hot water may be performed in various instruments, for example a rotary thermal waste utilization unit, but where appropriate is performed in the unit. Of benefit Fluidized bed form carbohydrates where appropriate is soluble in water and added to the used sand as an aqueous solution Carbohydrates can be, for example, monochacarides, such as glucos, mannol, galactose, or frutose, or disaccharides, such as chuchros, maltose, or lactose. Carbohydrates may also be Carbohydrate derivatives as well, such as polyhydric alcohols (e.g. ethylene glycol, glycyrol pentahertyl, xylitol, mannitol, or sorbitol). Azik sugar (such as gluconic acid) or a poly-saccharide derivative (e.g. a soluble portion of starch, such as glucose syrup. The amount of carbohydrates used in waste-based processes is typically 0.25 to 5.0% by weight on a normal basis. Of the weight of sand used Carbohydrates are added to the sand. Where it was used to make formwork Or the core of the casting And where it was connected to By utilizing alkaline rechol, phenol, formaldehyde, resin before the utilization of sandy wastes by utilization From waste by heating Making use of the waste with Hot water may be performed in various equipment, for example a rotary thermal waste utilization unit, but where appropriate is performed in the utilization unit. Fluidized carbohydrate form, which is properly soluble in water And added to the sand that was used as an aqueous solution Carbohydrates can be, for example, monochrates, such as glucos, mannol, galactose, or frutose or disaccharides, such as chuchros, moldo. Lactose or carbohydrate may also be Carbohydrate derivatives as well, such as polyhydric alcohols (e.g. ethylene glycol, glycyrol pentahertyl, xylitol, mannitol, or sorbitol). Azik sugars (such as gludonic acid) or polysaccharide derivatives (e.g. soluble starches such as glucose syrup or detrin) the amount of carbohydrates used in the process of Waste utilization is typically 0.25 to 5.0% by weight on a Of the weight of sand used

Claims (2)

1. A process for the utilization of waste sand by heating where it has been used for cores. Or formwork of casting and where it is welded by alkaline resulfi Non-formaldehyde resin There is a unique feature where Carbohydrate Was added to the sand that was used before the operation By heating the sand 2. The process in accordance with claim 1 has a characteristic whereby a process consists of acting on a lump of sand, which has been used to make a core or formwork, a formwork, and where it is welded by Use alkali tags: