SU1256792A1 - Method of graphite flotation - Google Patents

Description

The invention relates to the enrichment of minerals and can be used in the flotation of graphite. The purpose of the invention is to reduce the loss of graphite with waste, increase selectivity while simultaneously reducing the cost of the flotation process.

The composition of the circulating gas oil, wt.%:

Limit hydrocarbons C High-molecular paraffin hydrocarbons 5С, „- 33-37 Polycyclic paraffin hydrocarbons (polymeric cycloparaffins) 13-16 Polycyclic aromatic hydrocarbons 9-1-2 Polycyclic naphtha-aromatic hydrocarbons6-9 Alkyl-substituted aromatic hydrocarbons C, 14-17, Organo-hetero compounds 1 -2 Naphthenic hydrocarbons 6-8 Petroleum coke 5-8 Product characteristic;

10, 50

89.50

100, 0

10, 76

89.24

100, 0

11, 34

88.66

57.80 33.01 0.663

4,060

57.4 33.40 0.522

4,060

60.92 28.55 0.927

0

five

0

five

0

Density, g / cm 0.950-0.970 Onset of boiling, C - 150-180 At t, ° С, boils on average,%: up to 276 .10

276-30650

End of boiling, C 333-350 Example. A portion of graphite ore (400 g) is mixed with water, ground in a laboratory ball mill for 15 minutes. The crushed ore is loaded into a laboratory machine of the Mechanobr type with a 1.8 liter chamber. Then collector-circulating gas oil is supplied. After contacting the sample of graphite ore with a reagent, a blowing agent is supplied for 3 minutes, for example, T-80, followed by contacting for 1 minute. Air is then introduced into the flotation cell and floated.

The analysis of the above results shows that the best indicators are obtained by the proposed method.

The optimal consumption of reagents for vacuum gas oil is 0.610 kg / t, circulation gas oil is 0.450 kg / t. The table gives comparative indicators for the flotation of graphite ore obtained by the proposed and known methods.

Vacuum gas oil 0,260

T-80 - 0,250

Vacuum gas oil 0,610

T-80 - 0,250

Vacuum gas oil 0,870

9, 10

100.0 4.060 45.40 40.310

90.90 100.0

0.431 4.060

Concentrate 9.40

46,36 39.480 Tails 90.60 0.385

Source 100.0 4.060

Concentrate 9.90 48.44 37.550

Tails 90.10 0.380

Source 100.0 4.060

The technical and economic advantage of the proposed method in comparison with the known method is to increase the technological performance by reducing the loss of graphite with flotation waste, improving selectivity and cheapening the flotation process due to the use of cheaper reagent-circulation gas oil and reducing its consumption.

So, in graphite flotation, the use of circulating gas oil allows to reduce the ash content of the concentrate with

Compiled by S. Ivankov Editor M. Tovtin Tehred I. Veres Proofreader M. Demchik

Order 4857/5 Circulation 514Subscription

VNIIPI USSR State Committee

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

Production and printing company, Uzhgorod, st. Design, 4,

Table continuation

100.0

T-80 - 0,250

Circulating gasoil 0.320

T-80 - 0.142

0.450 circulating gas oil

T-80 - 0.142

Circulating gas oil 0.650

T-80 - 0.142

57.4% to 46.36%, with the increase of carbon recovery into concentrate from 88.53% to 91.41% and with a decrease in the consumption of the proposed reagent compared to vacuum gas oil 1.35 times. At the same time, the use of the proposed reagent allows reducing the blowing agent consumption by 1.78 times.

The use of circulating gas oil instead of vacuum gas oil allows reducing reagent costs by 2.6 times.

Claims (1)

METHOD OF FLOTATION OF GRAPHITE, including pre-conditioning of pulp with a collector and a blowing agent, characterized in that, in order to reduce graphite losses with waste and increase selectivity while reducing the cost of the process, circulating gas oil obtained in the process of pyrogas treatment is introduced as a collector. 256792