CN107694744B - A combined ultrasonic-shaker-flotation desliming process - Google Patents

Abstract

The invention discloses an ultrasonic-shaking table-flotation combined desliming process. The desliming process of the present invention is to firstly remove a part of the ore slime through an ultrasonic deslimer, and the overflow of the ultrasonic deslimer directly throws the tail , the sand settling of the ultrasonic desilter adopts a shaking table for sorting and desliming. The shaker concentrate is used as a qualified material after desliming. The tailings of the shaker are directly thrown out. Stir evenly and then carry out flotation desliming. The flotation foam is fine mud and is directly thrown at the tail, and the bottom flow of flotation is the material after desliming. The ultrasonic desliming machine used in the present invention includes ore feeding pipe, ore feeding nozzle, rectifying plate, Ultrasonic probe, casing body, overflow tank, overflow port, wire, ultrasonic control cabinet, supplementary water pipe, high-pressure water pipe, sand outlet switch, sand outlet, rectifier plate bracket and ore feeding pipe bracket, the present invention deslimes Thorough, high desliming efficiency, can reduce the consumption of chemicals in subsequent operations, and has a broad application prospect.

Description

A combined ultrasonic-shaker-flotation desliming process

technical field

The invention relates to an ultrasonic-shaking table-flotation combined desliming process, which belongs to the technical field of mineral processing.

Background technique

The source of ore slime is usually divided into two types, one is primary ore slime, ore slime formed during the ore-forming process, and the other is secondary ore sludge caused by pollution or over-grinding and crushing in the subsequent mining and sorting process. Raw slime. The so-called fine mud is usually a material with a particle size of less than 10 μm. Due to the small particle size, these fine-grained materials have a large surface area. During the mineral separation process, a large amount of chemicals will be consumed, and they will also adhere to the surface of coarse-grained minerals. Serious Affects subsequent sorting operations. Therefore, desliming treatment is often required when sorting and separating minerals, which provides a prerequisite for better sorting results in subsequent sorting operations.

For ores with high mud content, desliming is often carried out before sorting, such as zinc oxide ore with high mud content, if the mud content is too high, the foam viscosity will increase when the sulfide-amine flotation method is used It will be difficult to eliminate, and serious trough running will make the flotation index worse. Nowadays, more equipment is used for desliming, such as hydrocyclones, desliming buckets, inclined plate thickeners, etc. However, these equipments are often used alone, which cannot achieve a good desliming effect. It will be an effective method to improve the equipment or process and develop an efficient desliming equipment and process.

Contents of the invention

The main purpose of the present invention is to provide a kind of ultrasonic-shaking table-flotation combined desliming process, the ultrasonic desliming of the present invention mainly utilizes the ultrasonic desliming machine to complete, the equipment of this ultrasonic desliming machine is simple to make, and the desliming efficiency High, combined with shaking table, flotation and other processes, it can process ore with high mud content, and can obtain better desliming effect.

The specific operation of the present invention is as follows: firstly, a part of the ore slime is removed by the raw mineral material through the ultrasonic deslimer, the overflow of the ultrasonic deslimer directly throws the tail, and the sand settling of the ultrasonic deslimer continues to be sorted and deslimed by a shaking table, The shaker concentrate is used as the material after desliming, the tailings of the shaker are directly thrown out, the middle ore of the shaker is added with a foaming agent, and then the stirring tank is used to stir evenly before desliming by flotation. The flotation foam is fine mud, which is directly The bottom flow of the tailing and flotation is the material after desliming, and the concentration of the raw material is 10%~40%.

The ultrasonic desliming of the present invention is mainly completed by an ultrasonic desliming machine, which includes a feed pipe, a feed nozzle, a rectifying plate, an ultrasonic probe, a casing body, an overflow tank, an overflow port, a wire, an ultrasonic Control cabinet, supplementary water pipe, high-pressure water pipe, sand outlet switch, sand outlet, rectifier bracket and mine feed pipe bracket;

The upper part of the casing body is cylindrical with a diameter of 0.3~5m, the lower part is inverted conical, and the bottom taper angle is 20~70°. There is an overflow groove on the top of the casing body, and the bottom of the overflow groove is set The overflow port and the ore feeding pipe are fixed on the top center of the casing body through the ore feeding pipe bracket. The ore feeding nozzle is installed at the lower end of the ore feeding pipe. There is more than one rectifying plate support on each rectifying plate layer, each rectifying plate support is provided with more than one rectifying plate, and an ultrasonic probe is arranged between the two rectifying plate layers, and the ultrasonic probe passes through the wire and the external Ultrasonic control cabinet connection, more than one supplementary water pipe is installed on the side of the casing body, and connected to the external water source, there is a grit outlet at the bottom of the casing body, and a grit outlet switch is provided above the grit outlet, and the high-pressure water pipe is installed On the side of the grit chamber, and connected to the external water source.

The working principle of the ultrasonic deslimer: first turn on the power of the ultrasonic control cabinet, the signal is transmitted to the ultrasonic probe through the wire, and the ultrasonic probe emits ultrasonic waves within a 360-degree range around it. Scattering spray, the slurry is loosened under the action of the ultrasonic probe, the fine mud passes through the rectifying plate, floats up and enters the overflow tank, and finally is discharged from the overflow port, and the heavy minerals pass through the rectifying plate and are discharged from the grit sink. The mouth switch can control the size of the sand outlet, the additional water pipe can add water as needed, and the high-pressure water pipe can provide high-pressure water to solve the blockage of the sand outlet.

The beneficial effects of the present invention are:

1. The present invention uses an ultrasonic high-efficiency deslimer, a shaking table and a flotation machine for combined desliming. The process is simple, the desliming is clean, and it is easy to implement.

2. The process of the present invention adopts stage desliming operation, and adopts different equipment for desliming according to the material properties of each operation stage, which can not only reduce the subsequent operation load, but also achieve the purpose of improving the desliming efficiency.

3. The present invention uses an ultrasonic deslimer for ultrasonic desliming. The effect of ultrasonic waves can well prevent fine mud agglomeration and the phenomenon of covering the surface of ore slime, and greatly improve the desliming effect.

4. The ultrasonic deslimer of the present invention does not need stirring power, which can reduce the consumption of electric energy and reduce the cost of desliming.

Description of drawings

Fig. 1 is a process flow diagram of the present invention;

Fig. 2 is a sectional view of the ultrasonic deslimer of the present invention;

Fig. 3 is the top view of the ultrasonic deslimer of the present invention;

In the figure: 1—mine feed pipe, 2—mine feed nozzle, 3—rectifier plate, 4—ultrasonic probe, 5—casing body, 6—overflow tank, 7—overflow port, 8—lead wire, 9—ultrasonic wave Control cabinet, 10—supplementary water pipe, 11—high pressure water pipe, 12—settling port switch, 13—settling port, 14—rectifier plate support, 15—supply pipe support.

Detailed ways

The present invention will be described in further detail below through the accompanying drawings and examples, but the protection scope of the present invention is not limited to the content described.

Embodiment 1: Ultrasonic-shaking table-flotation combined desliming process, the specific operation is as follows:

The original slime of a weathered iron ore in Sichuan has a mud content of 30%. After two times of desliming of the iron concentrate after magnetic separation using a traditional cyclone, the mud content is still above 5%. The obtained iron concentrate The grade is 61.63%.

Using the method of the present invention, the process flow is shown in Figure 1. The iron concentrate after magnetic separation is subjected to ultrasonic-shaking table-flotation combined desliming. First, the iron concentrate after magnetic separation with a concentration of 10% is deslimed by ultrasonic waves. A part of the slime is removed by the mud machine, and the overflow of the ultrasonic desilter is directly thrown at the tail. Throw tails directly, add foaming agent 2 ^# oil 75g/t to the ore in the shaking table, and then use a mixing tank to stir evenly before desliming by flotation. After the material, the mud content of the product after desliming is below 1%, and the grade of iron ore concentrate is 65.63%. However, adopting the method of the present invention to carry out desliming greatly reduces the mud content, and the quality of the concentrate has been greatly improved. increase in magnitude.

The ultrasonic deslimer used in the present invention is shown in Figures 2 to 3, including a feed pipe 1, a feed nozzle 2, a rectifying plate 3, an ultrasonic probe 4, a casing body 5, an overflow tank 6, and an overflow port 7 , lead wire 8, ultrasonic control cabinet 9, additional water pipe 10, high pressure water pipe 11, grit outlet switch 12, grit outlet 13, rectifying plate bracket 14 and ore feeding pipe bracket 15;

The upper part of the casing body 5 is cylindrical with a diameter of 0.3m, the lower part is inverted conical, and the bottom cone angle is 20°. An overflow tank 6 is provided above the top of the casing body 5, and an overflow tank 6 is provided at the bottom of the overflow tank 6. The overflow port 7, the ore feeding pipe 1 is fixed on the top center of the casing body 5 through the ore feeding pipe bracket 15, the ore feeding nozzle 2 is installed at the lower end of the ore feeding pipe 1, and the ore feeding nozzle 2 is located in the casing body 5, and the casing body 5 is provided with upper and lower rectifying plate layers, and there are four rectifying plate supports 14 on each rectifying plate layer. There are six rectifying plates 3, and an ultrasonic probe 4 is arranged between the two rectifying plate layers. The ultrasonic probe 4 is connected to the external ultrasonic control cabinet 9 through a wire 8, and two additional water pipes 10 are installed on the casing body 5 One side, and connected with the external water source, a grit chamber 13 is provided at the bottom of the casing body 5, a grit chamber switch 12 is provided above the grit chamber 13, and a high-pressure water pipe 11 is installed on the side of the grit chamber 13, and is connected to the external Water connection.

Embodiment 2: ultrasonic-shaking table-flotation combined desliming process, the specific operation is as follows:

A lead-zinc oxide mine in Guangxi has a mud content of 25%. The mud content is still greater than 10% by pre-selection and desliming in a deslimer. Then, the sulfide-amine method is used for flotation, which consumes a lot of reagents. Finally, in the concentrate, Pb The grade is 31.50%, the recovery rate is 56%, the Zn grade is 25.65%, the recovery rate is 63.7%, the flotation index is poor, and the foam is sticky and the groove is serious.

Using the ultrasonic-shaking table-flotation combined desliming process described in the present invention, the process flow is shown in Figure 1. The raw ore of a certain lead-zinc oxide mine in Guangxi is pre-delimed. First, the raw ore with a concentration of 40% is passed through ultrasonic waves. The deslimer removes a part of the slime, the overflow of the ultrasonic deslimer is directly thrown at the tail, the sand settling of the ultrasonic deslimer is sorted and deslimed by a shaking table, and the shaker concentrate is used as a qualified deslimed material, and the shaker tail The ore is directly thrown tailings, and foaming agent 2 ^# oil 75g/t is added to the ore in the shaking table, and then the stirring tank is used to stir evenly, and then flotation desliming is carried out. The material after mud, the mud content of the product after desliming is less than 1%. The sulfide-amine method is used for flotation. The flotation index is 36.70% of Pb grade, the recovery rate is 78%, the Zn grade is 32.34%, and the recovery rate is 82.4%. , and the amount of sodium sulfide is reduced to 1/2 of the original, the amount of dodecylamine is 1/3 of the original, the concentrate grade and recovery rate have been significantly improved, and compared with the previous desliming process, the content is greatly reduced. The amount of mud and the phenomenon of flotation running trough are less.

The structure of the ultrasonic deslimer used in this embodiment is the same as in Embodiment 1, the difference is that the upper part of the casing body 5 is cylindrical with a diameter of 4m, and the lower part is inverted conical and the bottom cone angle is 50°

Embodiment 3: Ultrasonic-shaking table-flotation combined desliming process, the specific operations are as follows:

The mud content of a weathered titanium ore in Yunnan is 21%, and the mud content is still greater than 6% through cyclone pre-selection. After desliming, the hydroxamic acid collector is used for flotation to obtain the Ti grade in the titanium concentrate. 33.70%, recovery rate 66.83%.

Using the ultrasonic-shaking table-flotation combined desliming process described in the present invention, the process flow is shown in Figure 1. The raw ore of a certain lead-zinc oxide mine in Guangxi is pre-delimed. First, the raw ore with a concentration of 25% is passed through ultrasonic waves. The deslimer removes a part of the slime, the overflow of the ultrasonic deslimer is directly thrown at the tail, the sand settling of the ultrasonic deslimer is sorted and deslimed by a shaking table, and the shaker concentrate is used as a qualified deslimed material, and the shaker tail The ore is directly thrown tailings, and foaming agent 2 ^# oil 90g/t is added to the ore in the shaking table, and then the stirring tank is used to stir evenly before flotation desliming, the flotation foam is fine mud and the tailings are directly thrown, and the bottom flow of flotation is For the muddy material, the mud content of the product after desliming is below 1%. After desliming, a hydroxamic acid collector is used for flotation. When the amount of collector remains unchanged, the Ti grade in the titanium concentrate is 39.20%. , The recovery rate is 83.65%, and the grade and recovery rate of titanium concentrate have been significantly improved.

The structure of the ultrasonic deslimer used in this embodiment is the same as in Embodiment 1, except that the upper part of the casing body 5 has a cylindrical diameter of 5 m, the lower part is an inverted conical shape, and the bottom cone angle is 70°.

Claims (3)

1. a kind of flotation combined desliming process of ultrasonic wave-shaking table-, which comprises the following steps:

Raw ore material is removed into a part of sludge by ultrasonic wave deslimer first, tail is directly thrown in the overflow of ultrasonic wave deslimer, The sand setting of ultrasonic wave deslimer carries out sorting desliming using shaking table, and table concentrate is as material after qualified desliming, shaking table tailing Tail is directly thrown, foaming agent is added to shaking table chats, flotation desliming, flotation froth is then carried out using agitator again after mixing evenly Tail is directly thrown, floatation underflow is the material after desliming, and the ultrasonic wave deslimer includes mineral-feeding pipe (1), to mine spray head (2), whole Flowing plate (3), ultrasonic probe (4), casing ontology (5), overflow launder (6), overflow port (7), conducting wire (8), ultrasonic wave control cabinet (9), it adds water pipe (10), high-pressure water pipe (11), sand sinking port switch (12), sand sinking port (13), rectify board mount (14) and to mine Pipe holder (15)；

Casing ontology (5) top is cylinder, and lower part is inverted conical shape, and the over top of casing ontology (5) is equipped with overflow launder (6), the lowest part of overflow launder (6) is equipped with overflow port (7), and mineral-feeding pipe (1) is fixed on casing ontology by mineral-feeding pipe bracket (15) (5) top center, the lower end of mineral-feeding pipe (1), which is installed, gives mine spray head (2), is located in casing ontology (5) to mine spray head (2), casing It is equipped with upper layer and lower layer cowling panel layer in ontology (5), has more than one rectification board mount (14) on each layer of cowling panel layer, it is each A rectification board mount (14) is equipped with more than one cowling panel (3), is equipped with ultrasonic probe (4) between two layers of cowling panel layer, Ultrasonic probe (4) is connect by conducting wire (8) with external ultrasonic wave control cabinet (9), more than one to add water pipe (10) peace It mounted in casing ontology (5) side, and is connect with external water source, is equipped with sand sinking port (13) in casing ontology (5) bottom, sand sinking port (13) top is equipped with sand sinking port switch (12), and high-pressure water pipe (11) is mounted on sand sinking port (13) side, and connect with external water source.

2. the flotation combined desliming process of ultrasonic wave-shaking table-according to claim 1, it is characterised in that: the ultrasonic wave is de- The bottom cone angle of the inverted conical shape of mud machine is 20 ~ 70 °, and the diameter of ultrasonic wave deslimer upper cylindrical is 0.3 ~ 5m.

3. the flotation combined desliming process of ultrasonic wave-shaking table-according to claim 1, it is characterised in that: raw ore material it is dense Degree is 10% ~ 40%.