CN106733215A

CN106733215A - A kind of preparation method of scheelite inhibitor

Info

Publication number: CN106733215A
Application number: CN201611117883.XA
Authority: CN
Inventors: 魏宗武; 陆建坚
Original assignee: Guangxi University
Current assignee: Guangxi University
Priority date: 2016-12-07
Filing date: 2016-12-07
Publication date: 2017-05-31
Anticipated expiration: 2036-12-07
Also published as: CN106733215B

Abstract

A kind of preparation method of scheelite inhibitor, comprises the following steps：(1) 130~150ml mass concentrations are added to after 50~55g tannic acids are mixed with 20~25g amion acetic acids in 10% sodium hydroxide solution, constant temperature 2~2.5 hours after being heated to 80~85 DEG C and dissolving it, 25 DEG C are cooled to, the sodium carbonate liquor that 20~30ml mass concentrations are 20% are slowly added at this temperature and are obtained product 1.(2) 20~30g gallic acids and vulcanized sodium that 150~160ml mass concentrations are 20% are configured to solution, it is coupled under the conditions of pH10.5~11 with product 1 and obtains product 2, the black powder that product 2 and nigrosine are coupled soluble in water under the conditions of pH11.5~12 is the inhibitor.Inhibitor of the present invention can have good inhibiting effect to scheelite, and inhibitory action is not produced to Mo-bearing Iron Ores mineral, and dosing is few, nontoxic pollution-free.

Description

A kind of preparation method of scheelite inhibitor

First, technical field

The present invention relates to a kind of preparation method of scheelite inhibitor, the inhibitor being prepared into contains suitable for white tungsten fine ore There are a large amount of Mo-bearing Iron Ores mineral, scheelite need to be suppressed, obtain the floatation process of Mo-bearing Iron Ores concentrate.

2nd, background technology

Often contain a small amount of Mo-bearing Iron Ores in some Scheelite Deposits, due to the floatability of Mo-bearing Iron Ores and the floatability of scheelite without Notable difference, usually by Mo-bearing Iron Ores also flotation together while Scheelite Flotation, forms tungsten bulk concentrate, then in smelting Tungsten separation is carried out, Tungsten smelting product quality is so not only influenceed, but also increases smelting cost, if using Selective depression Agent suppresses scheelite, and then flotation flotation Mo-bearing Iron Ores again, so can not only obtain molybdenum-iron concentrate and white tungsten fine ore, while also may be used Tungsten bulk concentrate economic worth is improved, is that enterprise increases economic benefit.

3rd, the content of the invention

Can suppress scheelite it is an object of the invention to provide one kind, inhibitory action is not produced to Mo-bearing Iron Ores mineral, make The inhibitor that Mo-bearing Iron Ores mineral with Scheelite Flotation separate.

The present invention reaches above-mentioned purpose using following technical scheme：A kind of preparation method of scheelite inhibitor, including such as Lower step：

(1) 130~150ml mass concentrations are added to after 50~55g tannic acids are mixed with 20~25g amion acetic acids is In 10% sodium hydroxide solution, be heated to 80~85 DEG C dissolve it after constant temperature 2~2.5 hours, be cooled to 25 DEG C, herein temperature The sodium carbonate liquor that 20~30ml mass concentrations are 20% is slowly added under degree and obtains product 1.(2) by 20~30g gallic acids Solution is configured to the vulcanized sodium that 150~160ml mass concentrations are 20%, is coupled under the conditions of pH10.5~11 with product 1 To product 2, the black powder that product 2 and nigrosine are coupled soluble in water under the conditions of pH11.5~12 is the suppression Agent.

During flotation, it is 25% that tungsten bulk concentrate is adjusted into ore pulp mass concentration, and it is after 9~9.5, to press then to adjust slurry pH 700~800g/t mineral add the inhibitor, then add enuatrol to make Mo-bearing Iron Ores mineral collector to catch Mo-bearing Iron Ores mineral Receive,

The total consumption of inhibitor is：700~800g/t.

When using, the inhibitor is first configured to the aqueous solution that mass percentage concentration is 1~2%.

Unless otherwise indicated, percentage of the present invention is mass percent, and each component content percentage sum is 100%.

Particularly advantage of the invention is：

1st, the scheelite inhibitor being prepared into using the present invention can have good inhibiting effect to scheelite mineral, to molybdenum Iron ore mineral do not produce inhibitory action, improve mineral resources comprehensive utilization.

2nd, dosing of the present invention is few, nontoxic pollution-free.

4th, specific embodiment

Technical scheme is further described below by way of specific embodiment.

Embodiment 1

One example of the preparation method of scheelite inhibitor of the present invention, comprises the following steps：

(1) 130ml mass concentrations are added to after 50g tannic acids are mixed with 20g amion acetic acids for 10% NaOH is molten In liquid, be heated to 80 DEG C dissolve it after constant temperature 2 hours, be cooled to 25 DEG C, 20ml mass is slowly added at this temperature dense The sodium carbonate liquor spent for 20% obtains product 1.

(2) vulcanized sodium that 20g gallic acids and 150ml mass concentrations are 20% is configured to solution, is existed with product 1 Coupling obtains product 2 under the conditions of pH10.5, the black powder that product 2 and nigrosine are coupled soluble in water under the conditions of pH11.5 End is the inhibitor.

Embodiment 2

Another example of the preparation method of scheelite inhibitor of the present invention, comprises the following steps：

(1) 150ml mass concentrations are added to after 55g tannic acids are mixed with 25g amion acetic acids for 10% NaOH is molten In liquid, be heated to 85 DEG C dissolve it after constant temperature 2.5 hours, be cooled to 25 DEG C, 30ml mass is slowly added at this temperature Concentration is that 20% sodium carbonate liquor obtains product 1.

(2) vulcanized sodium that 30g gallic acids and 160ml mass concentrations are 20% is configured to solution, with product 1 in pH11 Under the conditions of coupling obtain product 2, the black powder as institute that product 2 and nigrosine are coupled soluble in water under the conditions of pH12 State inhibitor.

Embodiment 3

The present embodiment is application example of the scheelite inhibitor in tungsten separation of pulp concentrate.

1. raw mineral materials：

Raw materials used is white tungsten fine ore, and WO is contained in concentrate₃It is 45.20%, M_OO₃10.12%, material phase analysis show, except white Outside tungsten, Mo-bearing Iron Ores, also a small amount of wolframite, molybdine molybdite and a small amount of impure mineral limonite, goethite, aluminum silicon mineral and calcareous ore deposit Thing.

2nd, regime of agent and operating condition：PH values of pulp is adjusted to 9~9.5, by inhibitor 700g/t, enuatrol with sodium carbonate 300g/t carries out collecting with Mo-bearing Iron Ores, and as a result showing can effectively by scheelite and Mo-bearing Iron Ores flotation point using above agentia condition From, to ore deposit contain WO₃It is 45.20%, M_OO₃Under the conditions of 10.12%, triple cleaning is scanned three times by one roughing, contained M_OO₃53.67%, containing WO₃2.53%, the rate of recovery is 87.66% Mo-bearing Iron Ores concentrate, and WO is contained in product from failing₃49.64%.

Embodiment 4

The present embodiment is Another Application example of the scheelite inhibitor in tungsten separation of pulp concentrate.

1. raw mineral materials：

Raw materials used is white tungsten fine ore, and WO is contained in concentrate₃It is 49.73%, M_OO₃13.67%, material phase analysis show, except white Outside tungsten, Mo-bearing Iron Ores, also a small amount of wolframite, molybdine molybdite and a small amount of impure mineral limonite, goethite, aluminum silicon mineral and calcareous ore deposit Thing.

2nd, regime of agent and operating condition：PH values of pulp is adjusted to 9~9.5, by inhibitor 800g/t, enuatrol with sodium carbonate 300g/t carries out collecting with Mo-bearing Iron Ores, and as a result showing can effectively by scheelite and Mo-bearing Iron Ores flotation point using above agentia condition From, to ore deposit contain WO₃It is 49.73%, M_OO₃Under the conditions of 13.67%, triple cleaning is scanned three times by one roughing, contained M_OO₃53.44%, containing WO₃2.61%, the rate of recovery is 88.34% Mo-bearing Iron Ores concentrate, and WO is contained in product from failing₃53.40%.

Claims

1. a kind of preparation method of scheelite inhibitor, it is characterised in that comprise the following steps：

(1) 130~150ml mass concentrations are added to after 50~55g tannic acids are mixed with 20~25g amion acetic acids for 10% hydrogen In sodium hydroxide solution, be heated to 80~85 DEG C dissolve it after constant temperature 2~2.5 hours, be cooled to 25 DEG C, delay at this temperature The slow sodium carbonate liquor for adding 20~30ml mass concentrations to be 20% obtains product 1,

(2) 20~30g gallic acids and vulcanized sodium that 150~160ml mass concentrations are 20% are configured to solution, with product 1 Coupling obtains product 2 under the conditions of pH10.5~11, and product 2 is coupled with nigrosine under the conditions of pH11.5~12 must be soluble in The black powder of water is the inhibitor.

2. white application of the tungsten inhibitor in tungsten separation of pulp concentrate described in claim 1, it is characterised in that flotation When, it is 25% that tungsten bulk concentrate is adjusted into ore pulp mass concentration, and it is after 9~9.5, by 700~800g/t then to adjust slurry pH Mineral add the inhibitor, then add enuatrol to make Mo-bearing Iron Ores mineral collector to carry out collecting to Mo-bearing Iron Ores mineral,

The total consumption of inhibitor is：700~800g/t.

3. application of the scheelite inhibitor in the choosing of tungsten bulk concentrate is separated according to claim 2, it is characterised in that make Used time, the inhibitor is first configured to the aqueous solution that mass percentage concentration is 1~2%.