20110048968 | RECYCLING TUNGSTEN CARBIDE - In the electro-dissolution process for hard alloy recovery, the longitudinal acid flow is replaced by a transversal flow to progress the running quality of electrolyte; a supersonic wave device is set for increasing the reaction speed and preventing the oxidation bed from forming; a supersonic wave cleaner is used for cleaning the impurity ions; grinding process is improved for maintaining the original shape of hard particles (WC, VC, TiC, etc); magnetic separators are used for separating the residual metal binder (Co, Ni, Cr, etc) out of the powders. | 03-03-2011 |
20100204044 | Carrier and method of producing the same - The method of producing a carrier of the invention includes a step of kneading the starting carrier components, solid binding agent, liquid binding agent and diluted nitric acid water. The starting carrier components comprise aluminum hydroxide, pseudoboehmite, γ-alumina, powdery silica gel, powdery natural silica and zeolite. The solid binding agent comprises a powder of α-starch (rice), α-starch (potato), α-starch (tapioca), funori (glue plant), crystalline cellulose and powdery cellulose. The liquid binding agent comprises colloidal alumina, colloidal silica and polyvinyl alcohol. As a de-firing agent, further, there are used wood powder, charcoal powder, rice flour, wheat flour, barley flour, buck wheat flour and corn. The carrier has a pore volume in a range of 0.52 to 0.84 cc/g and a side crushing strength in a range of 2.2 to 11.0 kgf/particle. | 08-12-2010 |