Regarding heavy alkali filtration
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After heavy alkali is synthesized in the carbonization tower, should the resulting heavy alkali slurry pass through a thickener to increase the size of the crystal grains before being filtered? Which companies have installed such a thickener?
Reply 1# merryming: As far as I know, among the soda ash manufacturers in China, some use thickening processes while others do not； The main purpose is probably thickening, which facilitates separation by the filter.
This post was last edited by chen-jun-1024 on 2012-2-27 at 15:34. Heavy alkali and thick consistency – I really haven’t heard of that before. Haven’t seen it either.
Thickening devices have been used in the industry before, mainly to increase the liquid-solid ratio of the output fluid, which helps to improve the filtration capacity. They also reduce filtration errors; there is no significant effect on crystallization. It seems that Henan Jinshan used such thickening devices back during the pre-Qingming period
I heard that the Jinshan Alkaline Plant uses thickeners, but I haven’t been to see them.
I used it before, but the effect was not noticeable and it wasn’t successful; I stopped using it later
I really haven’t heard that thickening agents are needed to thicken the alkali solution further when producing heavy alkalis.
We have been using heavy alkali thickener for several years; it mainly helps to reduce chloride differences and increase the production capacity of alkaline processing units. It is worth investing in for factories with low alkali treatment capacity.