Full-automatic device for quickly drying desulfurized gypsum

Abstract

The invention discloses a full-automatic device for quickly drying desulfurized gypsum. The device comprises a vertical dynamic drying furnace, an electric hot air furnace, an electric dust collector, an induced draft fan and a thermocouple, wherein the vertical dynamic drying furnace is used for evaporating natural moisture and crystallized moisture under the forced action of hot air circulation in the furnace in the natural gravity falling process of desulfurized gypsum powder; the electric hot air furnace is applied to a hot air source generating device; the electric dust collector is used for separating dried desulfurized gypsum powder from air current; the induced draft fan is used for guiding high-temperature air current to pass through the surface of the desulfurized gypsum powder to accelerate the heat exchange and increase the production efficiency; and the thermocouple is used for controlling the hot air temperature of the electric hot air furnace. A screen mesh arranged on a rotating vertical shaft of the vertical dynamic drying furnace has the functions of scattering material agglomerates and prolonging the falling time of the powder in a dynamic rotating state. Coal combustion is not taken as a heat source in the entire production process, so that the air pollution is avoided to the maximum extent and clean production is realized.

Description

technical field [0001] The invention relates to a fully automatic drying device for desulfurized gypsum, in particular to a fast drying device for desulfurized gypsum used in the production of building gypsum and gypsum boards. Background technique [0002] Desulfurization gypsum is a kind of chemical gypsum, and it is one of the most important raw materials for the gypsum industry from now to the future. Desulfurization gypsum is an industrial waste solid obtained from sulfur-containing coal in the process of flue gas desulfurization and purification. It has not been effectively utilized for a long time, and most of it is piled up, causing great pollution to the environment. [0003] The application of desulfurized gypsum in China currently stays in the field of building gypsum after calcination with coal fire. Since desulfurization gypsum is monohydrate gypsum, during the process of calcination to remove crystal water and turn it into hemihydrate gypsum, the temperature o...

AI Technical Summary

Problems solved by technology

Since desulfurization gypsum is monohydrate gypsum, during the process of calcination to remove crystal water and turn it into hemihydrate gypsum, the temperature of coal fire is not easy to control, and most of it is often burned to anhydrous gypsum, which increases energy consumption and pollution for no reason. serious decline

Moreover, in the process of calcination with coal fire, coal ash enters the product, and the whiteness decreases, which reduces the added value of the product and the profit of the enterprise.

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