Air flow separator for gypsum powder

Abstract

The invention discloses an air flow separator for gypsum powder, and belongs to the gypsum powder production equipment. The technical aim of the air flow separator for the gypsum powder is how to avoid accumulation of large particles at the furnace bottom of a boiling furnace, guarantee the boiling effect, improve the quality of the gypsum powder, meanwhile decrease the number of times of furnacecleaning, lower the labor intensity of workers and improve the working efficiency. According to the adopted scheme, the air flow separator structurally comprises an air flow separating cylinder, a feeding cylinder is arranged at the lower end of the air flow separating cylinder, and a discharging cylinder is arranged at the upper end of the air flow separating cylinder; a material blocking cylinder is arranged on the upper position of the inner middle of the air flow separating cylinder, and an air blocking structure is arranged between the outer side wall of the material blocking cylinder andthe inner side wall of the air flow separating cylinder; and a large particle flowing-out structure is arranged on the lower position of the middle of the air flow separating cylinder, the inlet endof the large particle flowing-out structure is located on the lower position of the inner middle of the air flow separating cylinder, and the outlet end of the large particle flowing-out structure islocated at the oblique lower part outside the air flow separating cylinder.

Description

technical field [0001] The invention relates to gypsum powder production equipment, in particular to a gypsum powder air separator. Background technique [0002] Industrial by-product gypsum refers to the by-products or waste residues mainly composed of calcium sulfate produced by chemical reactions in industrial production, mainly including phosphogypsum, desulfurization gypsum, citrate gypsum, fluorine gypsum, salt gypsum, monosodium glutamate gypsum, copper gypsum and titanium Gypsum etc. Gypsum, an industrial by-product, usually cannot be directly utilized due to its large free water content and many harmful impurities. Dehydrate industrial by-product gypsum and convert dihydrate gypsum into β-CaSO 4 0.5H 2 O phase can be used to prepare building gypsum and products. [0003] Industrial by-product gypsum contains a certain amount of impurities such as cinders, stones, and large-grained anhydrite; industrial by-product gypsum is removed by hammer dryers and airflow dr...

AI Technical Summary

Problems solved by technology

[0003] Industrial by-product gypsum contains a certain amount of impurities such as cinders, stones, and large-grained anhydrite; industrial by-product gypsum is removed by hammer dryers and airflow dryers to remove surface water and a small amount of crystal water, and then separated by rotary sieves. The granulated impurities enter the fluidized furnace for calcination. In the process, the rotary sieve plays the role of separating the granulated impurities. The screen size of the rotary sieve is 3mm*3mm. If it is less than 3mm, it will enter the calciner. The gypsum powder working process in the calciner is high-level feed and high-level output. Particles larger than 1mm cannot go out. With long-term accumulation, a large amount of large-scale particles will accumulate in the bottom of the fluidized furnace, resulting in poor boiling and a decline in the quality of gypsum powder. We can only stop the machine to clean the large particles of impurities in the bottom of the fluidized furnace.

The more particles in the raw paste, the more frequent the furnace cleaning. Generally, the furnace needs to be cleaned once every 10-15 days. The cleaning time takes about 4 hours. The labor intensity is high, which seriously affects the product quality and work efficiency.

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