Lye and lime milk mixing distribution box

Abstract

The invention relates to a distribution box for mixing lye and milk of lime in alumina production, in particular to a production process in which milk of lime dissolved in lye as a medium enters a ball mill and bauxite batches in the production of Bayer process alumina mixing bin. The lye and lime milk mixing distribution box has the following structure: an lye inlet and a lime milk inlet are arranged on the top of the shell, a mixing chamber is provided below the lye inlet and lime milk inlet in the shell, and a mixing chamber is provided at the bottom of the mixing chamber A buffer chamber is arranged below, and material distributing chambers are arranged on both sides of the buffer chamber, and the material distributing chambers are connected with the discharge ports respectively, and the discharge ports are arranged at the lower part of the shell. The advantages and effects of the present invention: the working principle of the lye and milk of lime mixing distribution box is simple and reliable. The invention can simultaneously complete the two functions of mixing and distributing lye and lime emulsion, has good mixing effect and long service life, and is very useful in the Bayer process alumina production process in which caustic soda-dissolved lime milk enters ball mill batching production. Good use prospects.

Description

technical field [0001] The invention relates to a distribution box for mixing lye and milk of lime in alumina production, in particular to a production process in which milk of lime dissolved in lye as a medium enters a ball mill and bauxite batches in the production of Bayer process alumina mixing bin. Background technique [0002] In the production process of Bayer process alumina, there are two ways to add quicklime: one is to directly enter the dry lime into the ball mill for batching; the other is to use lye as the dissolution medium to dissolve the dry lime into lime milk and enter the ball mill. ingredients. [0003] In the production process using lime milk batching, a part of the lye is used as the dissolution medium to dissolve quicklime, which is prepared into 180g / l lime milk and then mixed with the rest of the lye, and then enters the ball mill and bauxite batching. After lime milk and lye are mixed, it is required to enter the ball mill in the form of no pres...

AI Technical Summary

Problems solved by technology

After lime milk and lye are mixed, it is required to enter the ball mill in the form of no pressure self-flow as much as possible, so as to avoid the excessive flow rate of the liquid from generating a driving force on the ore in the mill, resulting in insufficient residence time of the ore in the mill and affecting the grinding effect

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