CN112170019A

CN112170019A - Molybdenum separation collecting agent and preparation method thereof

Info

Publication number: CN112170019A
Application number: CN201910587368.5A
Authority: CN
Inventors: 不公告发明人
Original assignee: Xi'an Zhengtang Mining Technology Co ltd
Current assignee: Xi'an Zhengtang Mining Technology Co ltd
Priority date: 2019-07-03
Filing date: 2019-07-03
Publication date: 2021-01-05
Anticipated expiration: 2039-07-03
Also published as: CN112170019B

Abstract

The invention discloses a molybdenum separation collecting agent and a production method thereof. The collecting agent is prepared by taking kerosene and diesel oil or a mixture compounded by 30-85 parts by mass of kerosene and one or more of diesel oil, transformer oil, engine oil, aromatic hydrocarbon, cycloparaffin, olefin and paraffin hydrocarbon as raw materials, taking metal oxide as a catalyst, hydrogenating, and reacting in light and a rotating magnetic field. In the production of molybdenum separation, compared with the conventional collecting agent, the novel collecting agent has strong collecting capability, and can improve the recovery rate of the molybdenum separation production by 1-5 percentage points; compared with the conventional collecting agent with the same viscosity, the collecting agent has better dispersion, is beneficial to reducing the using amount of the collecting agent, and can effectively improve the process barrier of easy sticking of the mineral pulp of the refractory ore.

Description

Molybdenum separation collecting agent and preparation method thereof

Technical Field

The invention belongs to the technical field of chemical industry, and relates to a molybdenum selection collecting agent and a preparation method thereof.

Background

Collecting agents used for flotation of molybdenite at home and abroad are hydrocarbon compounds, such as kerosene, diesel oil and steam oil, or collecting agents prepared by compounding the kerosene or diesel oil serving as a main component with one or more of transformer oil, engine oil, aromatic hydrocarbon, olefin and liquid paraffin; in the collectors, the relative collecting capacity of the collector with long average carbon chain length is also enhanced, but the dispersion capacity in ore pulp is weakened, so that the improvement of the grade of minerals is not facilitated. Along with industrial development and resource consumption, high-grade rich ore is reduced year by year, more and more poor ore and difficult ore dressing are encountered in molybdenite exploitation, and the phenomenon that ore pulp which is not beneficial to production is sticky often occurs. In the existing molybdenite flotation production process flow, how to ensure that the pulp viscosity is in a proper range to ensure the production yield and the production stability, and how to ensure the yield, the grade and the recovery rate of difficultly-beneficiated and lean ores in beneficiation production are problems which need to be solved urgently in the molybdenite flotation production.

Disclosure of Invention

The invention aims to make up the defects of the existing molybdenum separation collecting agent and provide the molybdenum separation collecting agent which has good collecting capability and can effectively improve the viscosity of ore pulp and the production method thereof. The technical solutions adopted to achieve the above-mentioned objects of the invention are as follows: the collecting agent is prepared by taking kerosene and diesel oil or a mixture compounded by 30-85 parts by mass of kerosene and one or more of diesel oil, transformer oil, engine oil, aromatic hydrocarbon, cycloparaffin, olefin and paraffin hydrocarbon as raw materials, taking metal oxide as a catalyst, and carrying out hydrogenation reaction in illumination and a rotating magnetic field. The preparation method comprises the following steps:

1. kerosene and light diesel oil are used as raw materials and can be directly used; the kerosene is used after being homogenized with one or more of light diesel oil, transformer oil, engine oil, aromatic hydrocarbon, cyclane, olefin and paraffin hydrocarbon; the raw materials compounded by kerosene or light diesel oil and styrene in aromatic hydrocarbon are homogenized and then heated to 65-80 ℃ under stirring, and the temperature is kept for 10-60 minutes for use.

2. The catalyst and the spectrum generator are arranged in the reactor in advance; the pretreated raw material is injected into a tubular reactor or trickle bed reactor equipped with a rotating magnetic field or a pressure kettle with a stirring device for hydrogenation reaction. According to different raw materials, the magnetic induction intensity of a rotating magnetic field is between 0.05 Tesla and 10 Tesla, the wavelength of light is between 150 nanometers and 460 nanometers, the reaction pressure is 0-16 MPa, the reaction temperature is 80-350 ℃, the reaction time is 5-30 minutes, and the reaction time is inversely proportional to the reaction pressure and the reaction temperature.

3. The reaction product is rapidly cooled to below 30-40 ℃ to obtain the collector. The reaction types of the preparation of the collector are cracking, isomerization and cyclization, and the reaction process is carried out under the action of a rotating magnetic field, so that the molecular conformation of a part of products is different from the molecular conformation of conventional reaction, the tension of the surface of the liquid of the collector with the same configuration is improved, the dispersion in ore pulp is facilitated, and the collecting capability is improved.

Compared with the prior art, the invention has the following advantages:

in the production of molybdenum separation, compared with the conventional collecting agent, the novel collecting agent has strong collecting capability, and can improve the recovery rate of the molybdenum separation production by 1-5 percentage points; compared with the conventional collecting agent with the same viscosity, the collecting agent has better dispersion in ore pulp, is beneficial to reducing the using amount of the collecting agent, can effectively improve the sticky process barrier of the refractory ore pulp, and is beneficial to improving the yield.

Detailed Description

Example one

1. Raw material, kerosene; the catalyst comprises nickel oxide and titanium oxide in a mass ratio of 1: 1.

2. The preparation method comprises the following steps: presetting a catalyst and a spectrum generator in a pressure kettle which is provided with a rotating magnetic field and a stirring device, pumping kerosene into the pressure kettle according to a specified amount of equipment, stirring for hydrogenation, and stopping hydrogenation when the pressure of the equipment reaches 8 MPa; starting a rotating magnetic field, a spectrum generator and a heating device under stirring, wherein the magnetic induction intensity of the rotating magnetic field is between 2 Tesla and 3 Tesla, and the wavelength of light is between 300 nanometers and 350 nanometers; the reaction temperature of the pressure kettle is controlled between 150 ℃ and 170 ℃, and the reaction time is 10 minutes; stopping the machine after the reaction is finished, quickly cooling the reaction product to below 35 ℃ to finish the preparation, wherein the cooled product is the collector.

3. The effect is as follows: the molecular configuration of the collecting agent is similar to that of the fed kerosene, the viscosity of the collecting agent is obviously increased compared with that of the fed kerosene through isomerization, cyclization and change of a part of molecular configuration, the collecting agent is used for molybdenum separation production, the dispersion effect of the collecting agent in ore is better than that of the fed kerosene, the collecting capability is better than that of the fed kerosene, and the recovery rate can be improved by 1-2 under the same conditions.

Example two

1. Raw materials: kerosene and styrene in a mass ratio of 60: 40; catalyst, nickel oxide.

2. The preparation method comprises the following steps: presetting a catalyst and a spectrum generator in a pressure kettle which is provided with a rotating magnetic field and a stirring device, pumping kerosene and styrene into the pressure kettle according to the specified amount of equipment and the proportion, heating to 65-80 ℃ under stirring, carrying out self-polymerization reaction on the styrene, continuously stirring for hydrogenation after reacting for 20 minutes, and stopping hydrogenation when the pressure of the equipment reaches 12 MPa; starting the rotating magnetic field, the spectrum generator and the heating device under stirring, heating the pressure kettle, controlling the reaction temperature to be between 300 and 320 ℃, controlling the magnetic induction intensity of the rotating magnetic field to be between 4 and 4.5 Tesla, controlling the wavelength of light to be between 180 and 200 nanometers, and controlling the reaction time to be 20 minutes; stopping the machine after the reaction is finished, quickly cooling the reaction product to below 30 ℃ to finish the preparation, wherein the cooled product is the collector.

3. The effect is as follows: the collecting agent is light yellow, the molecular configuration of the collecting agent does not contain styrene, the liquid viscosity is between kerosene and light diesel oil, the dispersion effect of the collecting agent for molybdenum separation production is better than that of the kerosene, the collecting capability is better than that of the kerosene, the difficult-to-separate ore pulp is easy to stick, the process barrier is effectively improved, and the recovery rate can be improved by 1-3 compared with the kerosene under the same condition.

EXAMPLE III

1. Raw materials: kerosene, methylcyclohexane and liquid paraffin in a mass ratio of 1:1: 1; catalyst, nickel oxide.

2. The preparation method comprises the following steps: presetting a catalyst and a spectrum generator in a pressure kettle which is provided with a rotating magnetic field and is provided with a stirring device, pumping kerosene, methylcyclohexane and liquid paraffin into the pressure kettle according to the specified amount of equipment and the proportion, homogenizing and stirring for 15 minutes, adding hydrogen under the condition of continuous stirring, and stopping adding hydrogen when the pressure of the equipment reaches 10 MPa; starting a rotating magnetic field and a spectrum generator under stirring and heating, wherein the magnetic induction intensity of the rotating magnetic field is between 5.5 and 6 Tesla, and the wavelength of light is between 250 and 300 nanometers; the reaction temperature of the pressure kettle is controlled between 150 ℃ and 180 ℃, and the reaction time is 20 minutes; stopping the machine after the reaction is finished, quickly cooling the reaction product to below 35 ℃ to finish the preparation, wherein the cooled product is the collector.

3. The effect is as follows: the collecting agent is light yellow, the viscosity of liquid is less than that of light diesel oil, the dispersion effect of the collecting agent for molybdenum separation production is between that of kerosene and light diesel oil, the collecting capability is superior to that of the second embodiment, the technical barrier that mineral pulp which is difficult to separate is easy to stick can be effectively improved, and the recovery rate can be improved by 1-5 compared with that of the kerosene under the same condition.

Example four

1. Raw materials: light diesel oil and styrene with the mass ratio of 65: 35; catalyst, nickel oxide.

2. The preparation method is the same as the second example.

3. The effect is as follows: the collecting agent is light yellow, the liquid viscosity is higher than that of light diesel oil, the dispersion effect of the collecting agent for molybdenum separation is better than that of the light diesel oil, the collecting capability is better than that of the collecting agent in the second embodiment, and the recovery rate can be improved by 1-4 compared with kerosene under the same condition.

Claims

1. A molybdenum separation collecting agent and a preparation method thereof are characterized in that: the collecting agent is prepared by taking kerosene and diesel oil or a mixture compounded by 30-85 parts by mass of kerosene and one or more of diesel oil, transformer oil, engine oil, aromatic hydrocarbon, cycloparaffin, olefin and paraffin hydrocarbon as raw materials, taking metal oxide as a reaction catalyst, and carrying out hydrogenation reaction in illumination and a rotating magnetic field.

2. A molybdenum separator collector and a process for its preparation according to claim 1, wherein: the wavelength of the illumination light is between 150 nanometers and 460 nanometers.

3. A molybdenum separator collector and a process for its preparation according to claim 1, wherein: the magnetic induction of the rotating magnetic field is between 0.05 tesla and 10 tesla.