CN104607320A - Efficient flotation collector for rare earth ore - Google Patents

Abstract

The invention relates to a high-efficiency flotation collector for rare earth ore, which solves the problems of complex production process flow and unsatisfactory rare earth ore concentrate grade and recovery index caused by poor selectivity, difficult operation in production and high cost of the conventional flotation collector. The invention is prepared by mixing sodium hydroxide, sodium oleate and salicylic acid Wu according to the weight percentage: 5-25% of sodium hydroxide, 50-80% of salicylic acid Wu, 10-25% of sodium oleate, weighing the salicylic acid Wu, adding the sodium oleate, mixing, adding water until the weight percentage concentration of the collecting agent is 5%, finally adding the sodium hydroxide, uniformly stirring and cooling to normal temperature.

Description

Rare Earth Mine efficient flotation separation collecting agent

technical field:

The present invention is relevant with Rare Earth Mine valuable mineral flotation collector.

background technology:

Rare-earth original ore, after fragmentation, screening and ore grinding, adds floatation regulator successively, gangue mineral inhibitor, valuable mineral collecting agent in ore pulp.The bubble floating that valuable mineral rare earth is hydrophobic adheres to stirring, inflation produces scrapes to flotation device liquid level, becomes rare earth ore concentrate after dehydration.Rare earth yield is low, rare earth mineral products serious waste of resources, one of major reason is exactly lack the excellent rare earth flotation collector of collecting stable performance, the flotation collector composition of current employing is single, needs to heat, poor selectivity, not easy to operate in production, when heating, energy consumption is high, and cost is high, causes the complicated and rare earth ore concentrate grade of the technological process of production, rate of recovery index undesirable.

summary of the invention:

The object of this invention is to provide a kind of light rare earth ore deposit to bastnaesite class selective good, collecting ability is comparatively strong, and separating effect is better, and rare earth ore concentrate is of high grade, the rate of recovery is high, the Rare Earth Mine efficient flotation separation collecting agent that production cost is low.

The present invention is achieved in that

Rare Earth Mine efficient flotation separation collecting agent, is mixed by weight percentage by NaOH, enuatrol and bigcatkin willow hydroxyl Wu acid and forms:

NaOH 5-25%,

Bigcatkin willow hydroxyl Wu acid 50-80%,

Enuatrol 10-25%,

Take bigcatkin willow hydroxyl Wu acid, add water after adding enuatrol mixing, amount of water is 5% to be as the criterion to be dissolved into the concentration expressed in percentage by weight of collecting agent, finally adds NaOH, stirs and is cooled to normal temperature.

The light rare earth ore deposit of collecting agent of the present invention to bastnaesite class is selective, collecting is good, itself has foaming characteristic, does not need to add other foaming agents, reduce production cost in floatation process.The test of river Rare Earth Mine is branched off for Mianning, sichuan Province three, open-circuit test obtains grade 55.88 %, operation recovery reaches the rare earth ore concentrate product of 74.42%, the basis of open-circuit test adopt one thick two closed-circuit test sweeping three essences study, it is 56.65% that result of the test obtains rare earth ore concentrate grade, and operation recovery reaches the rare earth ore concentrate product of 82.87%.Experimental condition is as follows:

Subjects: Mianning, sichuan Province three branches off river Rare Earth Mine.

Original ore property: raw ore essential element chemical analysis is in table 1.

Raw ore is when feed particle size 75% is for being less than 0.074mm granularity, to high-gradient magnetic separation carry out rare earth float test containing the rare earth rough concentrate of about TREO5% and flow test result of study shows, floating agent is: NaOH adjusts slurry pH to be 9.5, inhibitor is waterglass, collecting agent is the present invention, foaming agent is ether alcohol, and flotation flowsheet is an open circuit flow process slightly sweeping two essences.Open-circuit test obtains grade 55.88 %, and operation recovery reaches the rare earth ore concentrate product of 74.42%, mine tailing rare earth TREO grade 0.59%, loss of work rate only 9.20% test index.In order to ensure grade and the rate of recovery of rare earth ore concentrate, the basis of open-circuit test adopt one thick two closed-circuit test sweeping three essences study, it is 56.65% that result of the test obtains rare earth ore concentrate grade, operation recovery reaches the rare earth ore concentrate product of 82.87%, mine tailing rare earth TREO grade 1.01%, loss of work rate only 17.13% test index.

detailed description of the invention:

Embodiment 1:

Collecting agent of the present invention is made up of NaOH, enuatrol and bigcatkin willow hydroxyl Wu acid mixing, its preparation method is: by 100g Weight computation, take bigcatkin willow hydroxyl Wu acid of 75g, add the enuatrol mixing of 20g, add water 2000 milliliters and be dissolved into liquid, finally add 5g NaOH, stir and be cooled to normal temperature.

The present invention applies in the large syneclise Rare Earth Mine flotation of Dechang County, Sichuan Province, and this ore deposit essential element chemical analysis is in table 1.

Table 1 raw ore essential element chemical analysis results/%

The Rare Earth Mine collecting agent that collecting agent of the present invention and the sixth of the twelve Earthly Branches have compares test:

Subjects: Mianning, sichuan Province three branches off river Rare Earth Mine

Original ore property: raw ore essential element chemical analysis is in table 1.

Test method:

Float test sample is-gravity treatment of 0.5mm raw ore after the concentrate (REO=3.73%) of gained, ore grinding adopts XMB-67 type 200 × 240 rod mill, and ore milling concentration is 62.5%, and flotation adopts 1LXFD III to test single flotation device.Float test is three groups of collecting agent contrast condition tests, first battery of tests adds adjusting agent waterglass consumption is 0.6kg/t, flotation time is 2 minutes, then adding rare earth research institute of Baogang provides collector dosage to be 1kg/t, flotation time is 3 minutes, finally add foaming agent 0.024kg/t, in order to roughly select, to draw together the bubble time be 3 minutes to flotation time, obtains rare earth ore concentrate and mine tailing two products respectively; First second group of test add adjusting agent waterglass consumption is 0.6kg/t, flotation time is 2 minutes, then adding body in Zhangjiakou Area, Hebei Province medicament manufacturer provides collector dosage to be 1kg/t, flotation time is 3 minutes, finally add foaming agent 0.024kg/t, in order to roughly select, to draw together the bubble time be 3 minutes to flotation time, obtains rare earth ore concentrate and mine tailing two products respectively; First 3rd group of test add adjusting agent waterglass consumption is 0.6kg/t, flotation time is 2 minutes, then adding the present invention, to develop collector dosage be voluntarily 1kg/t, flotation time is 3 minutes, do not add foaming agent, in order to roughly select, to draw together the bubble time be 3 minutes to flotation time, obtains rare earth ore concentrate and mine tailing two products respectively; Test these three groups 6 products obtained and carry out chemical analysis respectively, the result of the test obtained is in table 2.

Conclusion: result of the test (table 2) shows, the light rare earth ore deposit of collecting agent of the present invention to bastnaesite class is selective, collecting good, and index is all better than the rare earth catching agent that rare earth research institute of Baogang and body in Zhangjiakou Area, Hebei Province medicament manufacturer provide.And there is foaming characteristic due to itself, do not need to add other foaming agents in floatation process, therefore concerning such ore deposit, collecting ability of the present invention is stronger, separating effect is better, and sorting index is all significantly improved and does not need separately to add foaming agent, reduces production cost.

Embodiment 2:

Collecting agent of the present invention is made up of NaOH, enuatrol and bigcatkin willow hydroxyl Wu acid mixing, its preparation method is: by 100g Weight computation, take bigcatkin willow hydroxyl Wu acid of 80g, add the enuatrol mixing of 10g, add water 2000 milliliters and be dissolved into liquid, finally add 10g NaOH, stir and be cooled to normal temperature.This routine collecting agent and the Rare Earth Mine collecting agent had the sixth of the twelve Earthly Branches compare test: subjects: Mianning, sichuan Province three branches off river Rare Earth Mine

Original ore property: raw ore essential element chemical analysis is in table 1.

Test method is with embodiment 1, and effect is identical.

Embodiment 3:

Collecting agent of the present invention is made up of NaOH, enuatrol and bigcatkin willow hydroxyl Wu acid mixing, its preparation method is: by 100g Weight computation, take bigcatkin willow hydroxyl Wu acid of 50g, add the enuatrol mixing of 25g, add water 2000 milliliters and be dissolved into liquid, finally add 25g NaOH, stir and be cooled to normal temperature.This routine collecting agent and the Rare Earth Mine collecting agent had the sixth of the twelve Earthly Branches compare test: subjects: Mianning, sichuan Province three branches off river Rare Earth Mine

Original ore property: raw ore essential element chemical analysis is in table 1.

Test method is with embodiment 1, and effect is identical.

Claims (1)

1. Rare Earth Mine efficient flotation separation collecting agent, is characterized in that being mixed by weight percentage by NaOH, enuatrol and bigcatkin willow hydroxyl Wu acid forming:

NaOH 5-25%,

Bigcatkin willow hydroxyl Wu acid 50-80%,

Enuatrol 10-25%,

Take bigcatkin willow hydroxyl Wu acid, add water after adding enuatrol mixing, amount of water is 5% to be as the criterion to be dissolved into the concentration expressed in percentage by weight of collecting agent, finally adds NaOH, stirs and is cooled to normal temperature.