CS249908B1 - The method of obtaining mercury from sludge - Google Patents

Abstract

The solution relates to the recovery of mercury from sludges obtained during heavy liquor regeneration and from rinsing waters of leaching products. The essence of the solution lies in the preparation of slurry from sludge obtained during heavy liquor regeneration by filtering through filter material using rinsing waters, by treating the slurry with scrap iron, separating the scrap iron from the slurry after its treatment, filtering the slurry through the filter material and distilling the mercury contained in the filter cake obtained by filtering the slurry and on the surface of the scrap iron.

Description

The solution relates to the recovery of mercury from the sludge recovered from the recovery of the heavy fluid and from the rinsing waters of the products of elution.

The essence of the solution consists in preparing the coil from the sludge obtained by regenerating the heavy liquid by filtering through the filter material using rinsing waters, treating the scrap metal with iron scrap, separating the scrap iron from the mash after its treatment, filtering the mash through the filter material and distilling the mercury contained in the filter cake obtained by filtering mash and on the surface of scrap iron. 249908 249908

BACKGROUND OF THE INVENTION The present invention relates to the recovery of mercury from sludge recovered from the recovery of heavy liquids prepared from mercury salts and from rinsing water products of the ores, non-minerals, coal or other materials.

So far, mercury from the sludge recovered from the recovery of heavy liquor prepared from the mercury salt and rinsing water of the ore, non-ore, coal, or other substance is not recovered and the sludge, possibly rinsing water, is disposed of.

The disadvantage of this procedure is the loss of mercury as well as environmental pollution.

This drawback is eliminated by the method of obtaining mercury from the sludge recovered from the regeneration of the heavy liquid prepared from the mercury salt and rinsing water products of the flocculation, the principle of which consists of sludge mash obtained by filtering heavy liquid through the filter material using rinsing water products of the flocculation, iron scrap mash, separation of scrap iron from the mash after the end of its operation, filtering the mash containing precipitated mercury from scrap and distilling mercury contained in the filter cake obtained by filtering the mash and on the scrap metal surface. The recovery of mercury from the sludge recovered from the recovery of the heavy fluid prepared from the mercury salt and rinsing water of the dissolution products is achieved by filtering the contaminated heavy fluid through the filter material, preparing the mash from the filter cake retained on the filter material by using rinsing water of 100g thickening products. i-1, the action of scrap iron on the mash with a weight of 50 to 100 kg. m-3 for 150 to 180 hours, separating the mash scrap after it has ceased, filtering the mash through the filter material, and distilling the mercury contained in the filter cake obtained by filtering the mash and on the scrap metal surface. The advantages of the invention consist in preventing the mercury losses contained in the sludge recovered from the recovery of the heavy liquid prepared from the mercury salt and from the rinsing water of the mineralization products. Example

The process of recovering mercury from the sludge recovered from the recovery of the heavy fluid prepared from the mercury salt and rinsing water of the products of the invention consists in filtering contaminated heavy fluid through a dense filter cloth in a filter centrifuge, optionally mashing from sludge collected on the filter fabric using rinse water on thickening of 100 g. i “1, treatment of scrap iron with a weight of 50 kg. m-3 mash for 180 hours without mashing the scrap mash, separating the scrap iron from the mash after it has been sieved, filtering the mash through a dense filter cloth in the filter centrifuge and distilling the mercury contained in the filter cake obtained by mash filtration and iron scrap .

Claims (1)

SUBJECT MATERIAL: The method of obtaining mercury from sludge recovered from the recovery of heavy liquor prepared from mercury salt and rinsing water products of the dissolution product, characterized in that a mash is obtained from the sludge obtained by filtering contaminated heavy fluid through the filter material using rinsing water of 100g thickening products. . liter-1, wherein the mash is treated with iron scrap weighing 50 to 100 kg. m-3 mash for 150 to 180 hours without mashing the mash with the mash and after mashing the mash, the mash is separated, the mash is filtered through the filter material and the mercury contained in the filter cake is distilled off on the scrap metal.