Shunkin Dmitrij Vladimirovich,Shvetsov Vladimir Alekseevich,Belavina Olga Aleksandrovna
申请号：
RU20170108299
公开号：
RU2669258(C2)
申请日:
2017.03.13
申请国别(地区):
俄罗斯
年份:
2018
代理人:
摘要：
FIELD: chemistry.SUBSTANCE: invention relates to analytical chemistry and can be used to determine fine-dispersed precious metals in gold-bearing mineral raw materials of medium and acid composition. Method comprises treating a sample of ore, ground to a grain size minus 1 mm, with concentrated hydrofluoric acid or a mixture thereof with other mineral acids. Precipitate is filtered through a dense filter, filtering is carried out, the precipitate is mixed with the gel and the reducing agent, and the mixture is poured into a paper bag. And the mixture from above is covered with a tire, consisting of soda ash and finely divided glass. Backfilling with a layer of sludge with a glue and a reducing agent is carried out in a paper bag containing a mixture of soda and borax, taken in the ratio 3.5:1.5.EFFECT: invention increases the speed of the determination of precious metals, reduces the consumption of reagents.1 cl, 2 tbl, 2 ex
