Filter device for preparing liquid sodium silicate by liquid phase method

Abstract

The invention discloses a filtering device for preparing liquid sodium silicate by a liquid phase method, which comprises a drawing and filtering groove, a blade drawing and filtering machine, a vacuum pump, a liquid material storage tank and an electric travelling crane. The blade drawing and filtering machine consists of a plurality of drawing and filtering blades, a supporting stand and a liquid material pipe which is fixed at the top of the supporting stand; drawing and filtering blades are hung on the liquid material pipe and a liquid material outlet of the drawing and filtering blades is communicated with the liquid material pipe. The drawing and filtering groove is positioned at the lower part of the blade drawing and filtering machine. The electric travelling crane is arranged at the upper part of the blade drawing and filtering machine to drive the blade drawing and filtering machine to move. The vacuum pump is connected with the liquid material storage tank and the liquid material pipe is communicated with the liquid material storage tank. The filtering device of the invention can rapidly and effectively separate impurities with large proportion and high viscidity from the liquid material with certain viscidity; besides, the device has low investment, strong operability and very good industrial effect.

Description

technical field [0001] The invention relates to a filtering device for liquid-solid separation, in particular to a filtering device for preparing liquid sodium silicate by a liquid phase method. Background technique [0002] In the liquid sodium silicate synthesized by liquid-phase reaction, the active ingredient of liquid sodium silicate is 92-95%, the excess unreacted quartz sand accounts for about 7%, and the insoluble metal ions such as iron, aluminum, calcium, and magnesium account for about 2%. . The sand slag composed of unreacted quartz sand and metal ion impurities forms a sticky cake-like substance with high viscosity in the feed liquid, and the specific gravity is large, reaching 4g / cm 3 Therefore, it is necessary to choose a filter equipment that can quickly and effectively separate the sand and slag with a large specific gravity and high viscosity from the liquid with a certain viscosity. [0003] In the traditional plate and frame filter press, when the liqui...

AI Technical Summary

Problems solved by technology

[0003] In the traditional plate and frame filter press, when the liquid sodium silicate material enters, due to the high viscosity and specific gravity of the sticky cake-like substance, it will quickly deposit in the plate and frame of the filter press, so that the subsequent mucus cannot enter the plate and frame, resulting in suction filtration. unable to proceed

In the traditional suction filter barrel, when the liquid sodium silicate material enters, due to the high viscosity and fine particles of the sand residue, even a thin layer of sand residue sticks to the filter bag, and the upper and lower layers of the suction filter barrel will melt away. , Even with the highest vacuum degree, effective suction filtration cannot be carried out. At the same time, the sticky cake-like substance on the filter bag cannot be cleaned out by ordinary methods, so it cannot enter industrial production

Images