초록 ▼

An improved rigid filter plate for sludge dewatering is comprised of a filter element of two or more sizes within the range of 0.2 to 0.002 inch of irregular hard particles of aluminum oxide or similar materials, and of a supporting element of larger particles all bonded with an adhesive bonding age

An improved rigid filter plate for sludge dewatering is comprised of a filter element of two or more sizes within the range of 0.2 to 0.002 inch of irregular hard particles of aluminum oxide or similar materials, and of a supporting element of larger particles all bonded with an adhesive bonding agent. A process for manufacturing the improved rigid filter plate is also set forth.

대표청구항 ▼

An improved rigid sludge dewatering filter plate comprising at least two layers; the first layer comprising a thin, flat filtering element having an exposed, dense upper surface and a lower surface; said filtering element consisting essentially of irregular particles of one or more substances select

An improved rigid sludge dewatering filter plate comprising at least two layers; the first layer comprising a thin, flat filtering element having an exposed, dense upper surface and a lower surface; said filtering element consisting essentially of irregular particles of one or more substances selected from the group consisting of aluminum oxide, corundum, emery, garnet, silicon carbide, boron carbide and manufactured crystalline alumina products, bonded together with an adhesive bonding agent, wherein the particles are of at least two sizes within the range consisting essentially of about 0.2 inch to about 0.002 inch; and the second layer being a supporting element comprised of particles larger than the largest particles used in the filtering element, bonded together and to the lower surface of the filtering element with an adhesive bonding agent.