SU1662930A1 - Method of suppression potassium chloride dusting - Google Patents

Abstract

The invention relates to the use of alcohol-containing organic reagents for the production of non-dusting potash fertilizers. The aim of the invention is to increase the effectiveness of dust suppression of potassium chloride without deterioration of its physical and mechanical properties. For this, potassium chloride is treated with a hydraulic fluid containing polyhydric alcohols, for example, a PGV fluid, a spent PVG fluid, promhydrol or a spent promhydrol fluid. The proposed method makes it possible to reduce the dust suppressor consumption by half, while simultaneously reducing the dustiness of potassium chloride by a factor of 2 to 3. 1 tab.

Description

The invention relates to the use of organic reagents, in particular alcohol-containing reagents, for the preparation of non-dusting potash fertilizers.

The aim of the invention is to increase the effectiveness of dust suppression of potassium chloride without deterioration of its physical and mechanical properties.

As a dust suppressor, a PGV liquid (GOST 25821 -83) was tested, containing the following components, wt%:

Polyethylene glycol mol.m. 1500 23.1 Glycerol37.2

Triethanolamine4.0

Anticorrosive, entipenny additives.

WaterEverything

the spent fluid PGV, containing additional, wt.%:

Sodium chloride 5.3

Magnesium chloride 2.8

Potassium Chloride 3.3

promgidrol (TU 6021140-86) brand P 20-M - 1, containing, wt%:

Polyethylene glycol with mol.m. 3000 29.9 Xylitan19.5

Triethanolamine2.0

Anticorrosion, anti-foaming additives2,0

WaterEverything

spent promgidrol containing optional, wt.%:

Sodium chloride 6.2

Magnesium Chloride 3.4

Potassium Chloride 3.1

Used potassium chloride, containing particles of class MN, 1 mm, 17.2 wt.%. Determine the dustiness of the product (TU 113-).

to

SO

with

EXAMPLE 1 Potassium chloride with a dust collector of 22 10 mg / kg after drying is treated in a mixer with a hydraulic fluid PGV (GOST 25821-83) at a flow rate of 2.0 kg / ton of potassium chloride. At the same time, ai- | / 1 Saehiwate / aliphatic amine at a flow rate of 200 g / t As a result of the treatment, aspiration potassium chloride is obtained with a yield of 224 mg / kg

PRI me R 2 Potassium chloride, after drying with hymymosti 2210 mg / kg, is treated in sms / pele with spent liquid PGV, which additionally contains, in May,%

/ lorkd sodium 5.3

Magnesium chloride 2.8

Chloride Pali 3.3

.t 1 p schede O g / t potassium chloride At the same time, an eli-f MChS-amine skin tracer is applied at a rate of 200 g / t. As a result of the treatment, a dustless, 1 centr potassium with a dustiness of 183 mg / kg is obtained.

Table 15 shows the results of testing the above mentioned products as 1 1 by spruce up the potassium uloid.

Like the viczo V3 in the table below, Mr. Tayu, used in this

Dust suppressor time requires about 4 kg / ton of potassium chloride to be processed to achieve the required degree of dust (tests 4.5), while the PGV and promhydrol liquids require 2.0 kg / kg (tests 7.10). the presence of magnesium chloride in their composition has a somewhat large dust suppression effect (experiments 9 and 11)

Claims (1)

Invention Formula The method of dust suppression of potassium chloride by treating it with a mixture containing polyhydric alcohols, characterized in that, in order to increase the effectiveness of dust suppression without deteriorating its physicomechanical properties, a mixture of polyhydric alcohols is used to use hydraulic fluid PGV based on polyethylene thiol, glycerin and triethanolamine, or waste liquid PGV, or promshdrol based on polyethylene glycol, xylitane and trizanolamine or waste prohydrohydrol. b 7 8 9 10 II