Evanescent mode base paint for producing grate bar, and preparation technology of evanescent mode base paint

Abstract

The invention relates to an evanescent mode base paint for producing a grate bar, and a preparation technology of the evanescent mode base paint. The evanescent mode base paint is characterized by mainly comprising quartz powder with the meshes of 8-15, water, starch, white latex, sodium carboxymethyl cellulose and edible trona venenum, wherein the weight ratio of the quartz powder to the water to the starch to the white latex to the sodium carboxymethyl cellulose to the edible trona venenum is 100 to 75 to 40 to (1.8-2.3) to 8 to 2. The preparation technology of the evanescent mode base paint comprises the following steps: (1) fully mixing the quartz powder with the meshes of 8-15 with the water; (2) then feeding the corn starch by weight ratio, and continuously stirring while feeding; (3) then, feeding the white latex and the sodium carboxymethyl cellulose; (4) finally, feeding the edible trona venenum by weight ratio; (5) stirring the mixture obtained in the step (4) for 1 hour at the speed of 50-100 revolutions per minute. The paint prepared by the invention has enough refractoriness, chemical stability and heat stability, is high in adhesive capability and low in gas generation amount, and has good suspension property, brushing property, coating property and rheological property and high air permeability.

Description

technical field [0001] The invention belongs to the technical field of grate bar production and casting, and in particular relates to a lost foam basic paint for grate bar production and a manufacturing process. Background technique [0002] The grate bar is the main accessory on the trolley of the sintering machine. The function of the grate bar is to form a groove-shaped space with the trolley railing to accommodate and carry mineral materials. The part of the grate bar in contact with the mineral material is the upper surface, and the two ends of the upper part of the grate bar are stressed to play a supporting role. The bottom of the grate bar has two functions. First, it is used to fix the grate bar when it is turned over and unloaded so that it cannot fall off; secondly, it plays a supporting role when the top of the grate bar is under pressure, which can effectively prevent the grate bar from falling off. bending. The production of grate is generally processed by lo...

AI Technical Summary

Problems solved by technology

The production of grate is generally processed by lost foam casting. The selection of coating is very important in the casting process, otherwise it will affect the quality of the product. The existing coating refractory aggregate generally uses mullite powder. By adding binder, water And white latex for configuration, the above-mentioned requirements for its ratio are relatively strict, it is difficult to grasp, and it is also affected by the external temperature, if the ratio is not appropriate, it will affect its coating performance, and then cause casting molded grate There are quality problems such as trachoma and pores in the grate rods, so a kind of lost foam basic coating and manufacturing process for grate rod production is designed to reduce the difficulty of preparation, improve the performance of coating and hanging, and improve the yield of grate rods