Invenţia se referă la chimie, şi anume la un procedeu de purificare a soluţiilor de ionii de cianură, tiocianat şi cianat, inclusiv, a apelor reziduale obţinute la extracţia metalelor neferoase şi preţioase şi din industria cocsochimică. Esenţa invenţiei constă în aceea că soluţia, care conţine ioni de cianură, tiocianat sau cianat se trece printr-o coloană cu sorbent schimbător de anioni selectiv, obţinut prin modificarea în prealabil a anioniţilor puternic bazici cu compuşi de fier(III), la tratarea a 0,5...1,0 g de anionit cu 100 ml de soluţie, ce conţine 6...8 g/l sulfat de fier(III) nonahidrat la temperatura de 45...55°C timp de 8...12 ore.
The invention relates to chemistry, namely to a process for solution purification from cyanide, thiocyanate, cyanate ions, including waste waters, obtained as a result of non-ferous and noble metals extraction and in the by-product coke industry. Summary of the invention consists in that the solution containing cyanide, thiocyanate, cyanate ions is passed through a column with selective anion-exchange sorbent, obtained by preliminary modification of highly basic anionites with compounds of ferrum (III), by treatment of 0,5…1,0 g of anionite with 100 ml of solution, containing 6…8 g/l of ferric (III) sulphate nonahydrate at the temperature of 45…55°C during 8…12 hours.
Except where otherwise noted, this item's license is described as Brevet nevalabil. Data expirării brevetului: 2024.05.13.