SU895931A1 - Purifying colution for removing iron-containing impurities from raw materials - Google Patents

Description

; 54) CLEANING SOLUTION FOR REMOVAL

IRON-CONTAINING IMPURITIES FROM RAW MATERIALS

one

This invention relates to the purification of various raw materials from iron-containing impurities.

A known method of purifying quartz sand is by adding an ammonium or sodium chloride activator to it and mixing with a cleaning solution of oxalic acid heated to 70-80 ° C. Due to the reaction with dye admixtures of quartz sand, complex compounds are formed. Neni 1.

The closest to the invention in its technical nature is acids.; A new method of cleaning raw materials using a cleaning solution of 10% hydrochloric or nitric acid 2.

However, the degree of purification is not high enough: the amount of iron transferred to the solution is 0.25-1.15 g (4 in 100 ml of solution).

The purpose of the invention is to increase the degree of purification.

The goal is achieved by the fact that a cleansing solution, including hydrochloric acid and water, additionally contains diantipyrylmethane, Trilon B and MATERIALS

hydroxylamine hydrochloride in the following ratio of components, wt.%:

10.4-14

Hydrochloric acid Diantipyryl0, 20-0.48 methane 0.13-0.23: Trilon B Hydroxylamine 0, 23-0.327 hydrochloric acid Remaining Water

ten

Example. Take 250 ml of concentrated hydrochloric acid, add 7.38 g of reducing agent - hydroxylamine sulfate (NH (), j - ... HnSOA. 3.76 g of diantipyrylmethane and

15 0.223 g of trilon B. The solution is made up to 1 liter of water and heated to 100 ° C and quartz pieces are poured with this solution, which are boiled for 40 minutes. After the processing time has elapsed, the thief is drained and sent to evaporation to produce various iron compounds that can be used. Depending on the degree of contamination of quartz, this operation

25 is repeated. After treatment, purified quartz is washed with water and dried.

The table shows the dependence of iron extraction into solution on the amount of acid, reducing agent and

thirty

complexing reagents when cleaning pieces of quartz.

As follows from the table, the use of the solution almost 2 times increases the amount of iron that has passed into the solution. Instead of diantipyrylmethane, antipyrine can be taken as the organic base, and sulfosalicylic acid as the organic acid. So, in 1 liter of a solution containing 2-4 g of antipyrine, 0.28 g of sulfosalicylic acid and 1.4 g of hydroxylamine and 28-37 ml of concentrated HCl, 0.920 g of iron in 100 ml of solution is extracted from quartz in 30 minutes containing in 1 l of a solution of 2.92 g of antipyrine, 0.136 g of sulfosalicylic acid, 1.54 g of hydroxylamine and 150 ml of concentrated HCl,

30 min. 1.33 g in 100 ml solution is recovered.

The use of the proposed thief of the thief gives a complete cleaning, solid materials from iron-containing impurities and contributes to the return of production waste to the process.

Table continuation

acid and water, characterized in that, in order to increase the degree of purification, it additionally contains dantipyrylmethane, trilon B, hydroxylamine hydrochloride in the following ratio of components, wt.%:

Sol on acid 10.4-14 Dianthipyrylmethane 0.20-0.48

Sources of information taken into account in the examination

1. USSR author's certificate No. 643437, cl. From 03 To 1/00, 1977.

2. Melkon and G.S. Hydrothermal method of preparation of complex glass raw materials Kanazit on the basis of rocks and their products. Yerevan, Hayastan, p.84.

Claims (1)

Formula of the invention A cleaning solution for removing iron-containing impurities from raw materials, including hydrochloric acid and water, characterized in that, in order to increase the degree of purification, it additionally contains diantipyrylmethane, trilon B, hydrochloric acid hydrochloride in the following ratio of components. wt.%: 40 Hydrochloric acid 10.4-14 Diantipyrylmethane 0.20-0.48 Trilon B Hydroxylamine hydrochloride Water 0.13-0.23 0.23-0.327 Rest