A kind of translational titanium gypsum calcining method

Abstract

The invention discloses a tanslational titanium gypsum calcining method, and belongs to the technical field of titanium gypsum calcining. The method comprises the steps that 1, a burner and an induced draft fan are started, and the heat source generated through the burner provides circulating hot air for a high-temperature calcining mechanism and a translational drying mechanism through an air conduit; 2, a feeding belt sends the raw material titanium gypsum into a feed inlet of the high-temperature calcining mechanism; 3, the raw material titanium gypsum is extruded into sheet titanium gypsum with the thickness ranging from 2 cm to 3 cm through a pair-roll mill firstly, and then high-temperature calcining is conducted on the titanium gypsum in a high-temperature pipeline; 4, the calcined titanium gypsum falls onto the first layer of a translational conveyor belt, and all the layers of the translational conveyor belts take and convey the titanium gypsum in sequence; 5, grinding is conducted on semi-hydrated gypsum which is conveyed to the tail end of the last layer of the tanslational conveyor through a Raymond mill, the ground semi-hydrated gypsum is conveyed to an aging storage tank through a discharge screw, and aging is conducted from 3-4 days for standby. According to the tanslational titanium gypsum calcining method, the dried materials are not clotted, the humidity is even inside and outside, the product quality is high, the burner special for biomass fuel is adopted to provide the heat source, the energy consumption is low, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of titanium gypsum calcination, and more specifically, relates to a translational titanium gypsum calcination method. Background technique [0002] Titanium gypsum is an industrial waste residue mainly composed of dihydrate gypsum produced by adding lime to neutralize a large amount of acid wastewater in order to treat acid wastewater when sulfuric acid method is used to produce titanium dioxide. Titanium gypsum has the characteristics of high water content, high viscosity and high impurity content. In recent years, with the rapid development of the titanium industry, the production and storage of titanium gypsum in my country have been increasing. However, the status quo of dehydration processing and large-scale centralized utilization of titanium gypsum has not been ideal, so that titanium gypsum Pile up into mountains, waste arable land, rain washes away, drains the surface, and pollutes groundwater above...

AI Technical Summary

Problems solved by technology

The main disadvantages are as follows: (1) The process is long, the equipment is many and huge, and the maintenance cost is high; (2) The material is easy to agglomerate, the humidity inside and outside the drying material is uneven, and the product quality is low; (3) The energy consumption is high , the energy utilization efficiency is low, which is not conducive to energy saving and environmental protection; (4) The coal used for calcination pollutes the air, and the unrecovered titanium gypsum powder floats into the air, causing air pollution

However, the structure of the application is complex and the cost of equipment maintenance is high, so further improvement is still needed

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