GREY:EORBF - Post by User
Post by
peterstockhouseon Nov 24, 2016 11:37pm
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Post# 25512028
explanation from the transcript to disambiguate
explanation from the transcript to disambiguate"We aimed for and have now achieved ACH purity levels of 5 and 8 which corresponds to a high purity alumina level in excess of 5. This is a very significant accomplishment. The ACH crystal is coming from the crystallization section contain a high concentration hydrochloric acid, if we were to introduce these into an empty but heated decomposer, the strong endothermic decomposition reaction could have the potential of physically damaging the equipment, recall that our decomposer and calciner are fluidized bed reactors, so the way around the issue, I just mentioned is to introduce a bad of partially decomposed material called amorphous HPA inside the decomposer. This will mimic normal operations and absorb the heat shock from the introduction of the material from the crystallization section as we do this for the first time, so we are producing this bed right now using our Harper decomposer. And as I stated earlier, our plan is to only introduce material of the right purity levels into the calcination system, a requirement that goes for the bed material as well, the length of the state of the process is determined predominantly by the speed with which we can produce sufficient quantity of the partially decomposed ACH, as we're using the Harper system, this could take up to 10 days and we started this process yesterday, so we expect commencing introduction of this material and the subsequent feeding of material from the crystallization section in about the same time period. And we therefore anticipate producing HPA within the next few weeks,
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