Examples of 'leaching step' in a sentence
Meaning of "leaching step"
leaching step - a process in which substance is removed from another material by dissolving into a liquid
How to use "leaching step" in a sentence
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leaching step
The effectiveness of the leaching step is thereby improved.
The leaching step may be conducted at atmospheric pressure.
Usually no filtration is needed after the leaching step.
The leaching step typically comprises at least two leaching stages.
Magnesium chloride may be recycled to the leaching step.
The leaching step produces a leached ore mixture and a first liquid phase.
Is radically different from the leaching step of the proposed method.
The concentrated sulphate solution may be recycled to the leaching step.
This phase is susceptible to the leaching step in the manner described.
The liquor may be at least partly recycled to the leaching step.
The solid silicon from the second leaching step was washed with water.
The stripped ammonia can be captured for recycle to the leaching step.
From the first leaching step there is obtained a sulfate solution containing zinc and iron.
The use of copper chloride as an additive in the leaching step is not necessary.
Then, a leaching step was carried out onto the ground powder.
See also
Preferably sulphuric acid produced in this way is recycled to the leaching step.
Furthermore the leaching step in Hernandez et al.
The process involves treating the waste materials with dilute sulphurin and in a leaching step.
However, their presence in the leaching step is tolerated.
However other zinc containing ores may require further preprocessing prior to the leaching step.
In a preferred embodiment, the leaching step comprises a two stage leach.
The treatment concept leaches the gypsum contained in the CDD by water in a leaching step.
To this end the leaching step can be preceded by the following steps,.
Cobalt is typically leached in a subsequent stage of the leaching step under reducing conditions.
Leaching step ( d ) mainly provides for dissolution of bismuth from the second leaching residue.
In this method, a fresh leaching solution is initially charged to the leaching step.
Washing the material obtained from the leaching step with a dilute aqueous acid ;.
After separation, unreacted fractions can be reintroduced to the acid leaching step.
The leaching residue that precipitates in the leaching step 8 contains some lead and silver.
If desired, the grinding step may be performed separately from the leaching step.
The operation in the leaching step ( 3 ) will be further exemplified below.
Optimization of the oxidizing potential during the oxidative leaching step ( step a ).
In the leaching step 2, a leach slurry comprising copper, cobalt, iron and aluminium is formed.
Occasionally, parts of the ceramic core are not removed during the leaching step.
The product is then subjected to a sulphur leaching step 420 with a sulphur extractant.
In one embodiment, a recycle solution or a fresh leaching solution is provided to the leaching step.
For the above reason, the pH in the early leaching step is preferably 4.0 or more.
Most preferably, the air is bubbled through the solution during the leaching step.
The method of any preceding claim, wherein the separate leaching step uses cyanide as a lixivant.
Typically also other metals, such as iron and aluminium are leached in the leaching step.
Residue 64 may be recycled to the leaching step.
The process, however, also increases the amount of protein lost during the leaching step.
The process of claim 1 wherein air is bubbled through the solution during the leaching step.
A scrubber converts the NOx to HNO3 which can be reused in the leaching step.
The metal-depleted solution may be circulated back to the silver leaching step ( a ).
The examples given in this patent utilise a pH of 8, 9 or 10 in the leaching step.
In some embodiments, up to 80 % of the leach solution is recycled to the leaching step.
The still further treated second leaching residue 5 is then introduced to a leaching step ( c ) 105.
Hereinafter, this residue may be simply called " sulfide residue " . Leaching Step.
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