SU1220695A1 - Method of flotation of clay sludge from potassium-bearing ores - Google Patents

Description

The invention relates to the enrichment of minerals by the flotation method and can be used in potash plants processing clay sylvinite ores.

The aim of the invention is to increase the recovery of the insoluble residue in the slurry product and the selectivity of the sludge flotation process.

The potassium salt of dialkyl polyethylene glycol phosphate (component 1) is a viscous, opaque light brown liquid. The structural formula for component 1 is as follows:

SPN, „,, o (s, n ,.

where n 8-10; m 6.

Component 1 is highly soluble in water, low toxic.

N N-bis- (2-hydroethoxy) -2-alkyl imidazolinium dichloride (component 2) is a light-brown paste, resistant to acids and hard water, well soluble in water. The structural formula of component 2 has the following form:

 village

with CMS

2se

C17I35

The method is carried out as follows.

Example 1. A ore containing 24.18-25.95 wt.% Potassium chloride (KCS) and 3.63-4.05% insoluble residue (n. O.) 5 with a scale of -0.8 + 0 mm is subjected to rubbing for 20 min at the ratio W: T 1. Next, the pulp is diluted to W: T 2.5 and is processed successively by the collector (its consumption is 75 g / ton of ore), and then flocculant, the flow of which is 20 g / ton of ore. The collector — for example, a 1% aqueous solution of a mixture consisting of 35% of component 1 and 65% of component 2 of Flocculant — for example, a 0.25% aqueous solution of polyacrylamide.

The contact time with the collector is 60 s, and flocculation. 30 s. Sludge flotation was carried out for 240 s.

Example 2. Flotation clay. sludge from the ore is carried out by anapo 1220695.

in accordance with example 1. The collector is a mixture of 10% of component 1 and 90% of component 2, the consumption of which is 150 g / ton of ore.

Example 3. Sludge flotation of ore was carried out analogously to example 1. The collector consists of 25% of component 1 and 75% of component 2, its consumption is 100 g / ton of ore.

)

0

five

0

five

0

five

Example 4 The flotation of helmets from potassium-containing ores is carried out analogously to example 1. The consumption of the collector, consisting of 45% component 1 and 55% component 2, 75 g / ton of ore.

Example 5. The sludge is floated similarly to example 1. Collector consumption (5% of component 1 and 95% of component 2) 100 g / ton of ore.

Example 6 (prototype). Sludge is floated from ore similar to example 1. The collector consists of 90% monoethanolamine and 10% ethoxylated alcohol. Consumption collector 100 g / t ore. The collector is introduced into the system, for example, in the form of a 1% aqueous solution.

The table shows the indicators characterizing the efficiency of flotation of mountainous sludges according to the proposed method (. Examples 1-3), known (example 6) and according to the proposed method, when the composition of the collector has prohibitive values (examples 4 and 5).

Anshiz tabular data shows that the application of the proposed method significantly increases the extraction of n. in concentrate (sludge product) - by 14.6-18.3%, i.e. about 1.25-1.3 times in comparison with the known method. The index of selectivity E. calculated by the formula

 And about.

E

but

jVo.OAj

„, O. (. O.)

Where

.about. content acting in schlamo

vom product;

 but, the contents of n.o. in dehydrated potassium-containing ore,

is 123.1-134.5, i.e. 4.9–16.3 more than in the known method.

The use in the proposed method of collectors, the compositions of which have prohibitive values (examples 4 and 5) is impractical. Selectivity Indicator (E)

90 10

(mono- (hydroxyethanol-ethylated-amine) alcohol)

3.25 65.2 5.7

Editor A.Lezhnina

Compiled by S.Ivankov Tehred M.Hodanich

Order 1511/7 Circulation 514 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

1220695

in the examples considered, it is 91.1 and 109.6, i.e. lower than in the prototype (Ecd 118.2).

0.89125.1

0.94123.1

0.99134.5

0.9391.1

0.96109.6

0.71118.2

Proofreader M.Sharoshi

Claims (1)

METHOD FOR FLOATING CLAY Sludge from potassium-containing ores, including treating the pulp with a collector containing ethoxy groups and introducing a flocculant, characterized in that, in order to increase the extraction of insoluble residue in the sludge product and selectivity of the sludge flotation process, it contains a mixture of a potassium salt of dialkylpolyethylene glycol ether of phosphoric acid and N ₍ N-bis- (2-hydroxyl ethyl) -2-alkylimidazolinium dichloride is introduced in a ratio of components, wt.%: Potassium salt of diapkylpolyethylene glycol ether phosphoric acid 10-35 N, Ν-bis- (2-hydroxyethyl) -2-alkylimide azolinium dichloride 65-90 SU,. „1220695> • ί 1220695