CN111594763B - Method for improving fluidity and concentration of ore pulp - Google Patents
Method for improving fluidity and concentration of ore pulp Download PDFInfo
- Publication number
- CN111594763B CN111594763B CN202010495308.3A CN202010495308A CN111594763B CN 111594763 B CN111594763 B CN 111594763B CN 202010495308 A CN202010495308 A CN 202010495308A CN 111594763 B CN111594763 B CN 111594763B
- Authority
- CN
- China
- Prior art keywords
- ore pulp
- concentration
- component
- fluidity
- pulp
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paper (AREA)
Abstract
The invention provides a method for improving the fluidity and the concentration of ore pulp, which comprises the following steps: adding micron-sized particles into ore pulpA further component A, and/or high frequency vibration, wherein the particle size d of the component AABelow 20 μm. The method for improving the fluidity and the concentration of the ore pulp improves the fluidity of the ore pulp by adding the mineral component A with strong lubricity into the ore pulp of the existing ore pulp preparation equipment; meanwhile, the prepared ore pulp is vibrated at high frequency to improve the stacking density and improve the concentration.
Description
Technical Field
The invention relates to the field of mineral processing and ore pulp conveying, in particular to a method for improving the fluidity and concentration of ore pulp.
Background
In the mining industry, minerals such as gold tailings, silver tailings, iron ore, phosphate ore, coal and other minerals are often transported from a tunnel to a processing site in close-range pipelines. If vehicle transportation is adopted, the links of manual loading, unloading, transportation and the like are needed, but the general road condition of the mining area of the mine is poor, the vehicle transportation is limited, so that the pipeline transportation is adopted, the difficulty can be reduced, the cost performance is high, and the energy consumption is low.
The traditional process of pipeline transportation is to process mineral substances, grind the mineral substances together with water and a dispersing agent by a ball mill or a rod mill to prepare the mineral pulp with a certain concentration (the particle size of the ground particles is less than 1mm), and then pressurize by a mineral pulp pump and pipeline transport the mineral pulp to users.
The traditional process has certain disadvantages, and the ore pulp concentration is lower. In order to reduce the problem of sedimentation in conveying, the concentration of the prepared ore pulp is lower (in order to reduce kinematic viscosity), and the sedimentation phenomenon (equivalent to hydraulic conveying of minerals) is relieved by increasing the flow speed and pressure, so that the minerals seriously abrade pipelines and equipment due to too high flow speed; secondly, because the concentration of the ore pulp is low, a large amount of water is needed for preparing the ore pulp, and water in a mining area and water in a factory are not balanced mutually, so that a large amount of water resource is wasted; thirdly, because the concentration is low, the energy consumption of subsequent factory processing is very large.
In order to reduce the flow velocity, reduce the abrasion and reduce the energy consumption, the traditional process is urgently needed to be modified, and the concentration and the fluidity of the ore pulp are improved so as to reduce the problems of system energy consumption and subsequent processing cost.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims at a method for improving the fluidity and concentration of ore pulp, which improves the fluidity of the ore pulp by adding a mineral component A with strong lubricity into the ore pulp of the existing ore pulp preparation equipment; meanwhile, the prepared ore pulp is vibrated at high frequency to improve the stacking density and improve the concentration. The method has the advantages of simple process, short flow, no interference to the original pulping system, mild operating conditions, environmental protection and low cost.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
the invention provides a method for improving the fluidity and the concentration of ore pulp, which comprises the following steps:
after adding micron-grade component A into the ore pulp, and/or vibrating at high frequency, wherein the particle diameter d of the component AABelow 20 μm.
The method for improving the fluidity and the concentration of the ore pulp comprises the steps of adding a component A with lubricating property into the conventional ore pulp to further improve the fluidity of the ore pulp; secondly, the existing ore pulp is vibrated at high frequency to improve the stacking density of particles, release mineral 'external water' and 'internal water', and further dilute the ore pulp, so that the concentration of the ore pulp can be further improved.
In fact, if the ore pulp with high concentration is to be obtained, two main factors of high-density accumulation and high fluidity of particles need to be solved, the high concentration can be realized only by the high-density accumulation, the good fluidity can ensure that the high-density accumulation has good fluidity, otherwise, the high concentration without fluidity can be called as 'solid' instead of 'pulp', and the significance of pumping the high-density accumulation is lost if the high-density accumulation is solid. Therefore, the invention also improves the fluidity and the concentration of the ore pulp based on the reasons.
The high-frequency vibration and the addition of the component A can be carried out simultaneously or respectively. Generally, vibration is carried out after the component A is added, which belongs to the superposition effect of the component A and the component A, and the vibration can also improve the fluidity if the component A is not added, so the best operation mode is to carry out high-frequency vibration after the component A is added.
Preference is given toAs a further implementable variant, the particle size d of the component AABetween 5 and 10 μm.
The fluidity of the ore pulp and the size and the grain diameter d of the AAThe size has a direct relationship. Research shows that when the mineral particles are close to sub-nanometer level, the mineral particles have a certain lubricating effect, and the particle diameters d of different minerals playing a lubricating effectAIn contrast, the optimum lubricating diameter d is found experimentallyA(diameter d)AToo large or too small is not beneficial to improving the fluidity) can greatly improve the fluidity of the ore pulp. In the process of pipeline transportation and flowing of the ore pulp, the flowing resistance is mainly caused by the rolling friction among particles, and if the component A with the lubricating effect is added, the rolling friction of the particles is reduced (similar to that of oil-filling lubrication of a bearing).
More preferably, the particle size dA of component A may be 18 μm, 17 μm, 16 μm, 15 μm, and the like.
Preferably, the mass percentage of the component A is 5-15% of the amount of the pulp, and the mass percentage of the component A is 8-10% of the amount of the pulp.
Practice shows that the addition amount of the component A does not need to be too large, and the effect cannot be obviously improved and the cost is increased because the addition amount is too large.
Preferably, as a further implementable solution, the angle of repose of the component A is ≦ 30 °.
The mineral component A mainly plays a role in lubrication, the stronger the lubrication, the higher the fluidity, the smaller the repose angle, the stronger the lubrication, and the greater the lubricity, so that the mineral deposit repose angle is less than 30 degrees, which generally shows strong lubricity, therefore, the repose angle of the component A needs to be limited in order to improve the lubricity, and when the repose angle is not controlled within the range required by the scheme of the invention, the fluidity of the whole ore pulp can be influenced.
Preferably, the angle of repose of component A cannot be lowered at once, because when the angle of repose is too low, it is easy for dust to not flow normally, and it also causes loss of raw materials and cost increase, so that the optimum angle of repose of component A is 10 to 20.
More preferably, the angle of repose of the component a may also be 25 °, 22 °, 21 °, 15 °, and so on.
Preferably, in order to achieve better high-frequency vibration effect, as a further practicable scheme, the crushing vibration mode adopts the frequency of 15-70kHz and the power of more than or equal to 0.5w/cm2The ultrasonic waves of (4).
Preferably, as a further implementable solution, the frequency is 17-30kHz and the power is 1-2w/cm2. In practice, it is generally desirable that the power and frequency are as high as possible, but there is a contradiction in cost when implementing the two. Through research, most minerals are at the frequency of 17-30KHz and the power of 1-2w/cm2The invention can achieve the desired effect and has the best cost performance.
The high-frequency vibration is that high-frequency high-power ultrasonic waves are adopted to generate high-frequency vibration on liquid molecules and particles in the ore pulp, the amplitude is small to several microns, high-intensity high-power high-frequency vibration can instantly generate 100bar pressure and vacuum in the ore pulp, and the high frequency vibration and the vacuum are alternately changed at high frequency, so that solid particles in the ore pulp can be compacted, moisture (sometimes called as external water) among the particles is released, and the ore pulp becomes thinner instantly. Meanwhile, due to local heat generated by high-frequency vibration between molecules, molecular water (sometimes called inner water) in the molecular structure of the mineral substance is vaporized and overflowed instantly, so that the molecular water is released from the inside of the mineral substance particles. The high-frequency vibration among molecules brings about that mineral substance particulate matter 'outer water' and 'inner water' release simultaneously, though ore pulp concentration does not change, particulate matter mineral substance bulk density improves, and the ore pulp "becomes thin" on the whole, and the mobility strengthens, has opened further concentration-improving space, can add more mineral substances further concentration-improving then under the condition of guaranteeing qualified mobility.
It should be noted that the mineral slurry is a slurry processed by mineral substances and is a general term for all mineral substances. If the mineral substances are required to be made into slurry, the stacking density is required to be pursued mainly for the ore pulp to have high concentration and high fluidity, so the method is specially adopted to carry out operation for improving the fluidity and the concentration of the ore pulp, and the method has strong operability and is simpler and more convenient to operate.
During actual operation, the equipment provided with high-frequency vibration can be directly connected to the traditional pulping equipment in an abutting mode, for example, the equipment can be placed into grinding equipment, and also can be equipment and pipe fittings for ore pulp overflowing, such as buffer tanks and pipelines.
Now, practical operation scenarios of two methods are provided, the first method comprising:
(A) the existing ore pulp is extracted by about 10 percent and diluted by adding water, and then the ore pulp is sent to a sand mill for superfine grinding to ensure that the average particle size of the ore pulp reaches the required A component particle size dA；
(B) The particle diameter after grinding reaches dAThe desired slurry is pumped into the front end of the existing production line mill and ground with the raw mineral and water.
Another method comprises:
(A) installing a high-frequency vibration generator at the positions of a water source buffer tank, the outer wall of grinding equipment, an ore pulp buffer tank, an ore pulp overflowing pipeline, a pipe fitting and the like of an original production line;
(B) the frequency is adjusted to the appropriate frequency and power for the mineral.
By adopting the two methods, the fluidity and the concentration of the ore pulp can be improved, and the two methods work cooperatively, so that a remarkable effect can be obtained.
Compared with the prior art, the invention has the beneficial effects that:
(1) the method of the invention provides rules and indexes for improving the fluidity component A of the ore pulp, thereby greatly improving the fluidity of the ore pulp.
(2) The high frequency vibration method of the invention can drive the mineral molecule water out from the interior of the mineral and compact the mineral, and provides another method for improving the fluidity and concentration of the ore pulp from the molecular structure level.
(3) Compared with the traditional ore pulp preparation method, the concentration of the ore pulp can be improved by 4-8 percent.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, and it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
Step one, carrying out an experiment by using an existing ore pulp production line of a certain phosphate ore factory in Shanxi, and specifically carrying out the following operation process:
through laboratory research, the optimal lubricating particle diameter of the phosphate ore is 15 mu m, namely the average particle diameter d of the component A required by preparing ore pulp from the phosphate oreA15 μm, then the grinding average particle diameter dAThe experiment was carried out with 15 μm powdered rock phosphate (dry basis) added directly to the existing pulp.
The experimental procedure was as follows:
(1) preparation of component A: crushing and grinding the raw material phosphate ore to obtain the average particle diameter dAReaching 15 μm, the angle of repose was tested at 26 °.
(2) Average particle diameter dAAdding a small amount (3 wt%) of the 15-micron component A into the existing ore pulp (with the viscosity of 1156mPa.s) and uniformly stirring, wherein the ore pulp is thinned (the viscosity of 856mPa.s is thinned only due to the lubricating effect of the component A), and the dosage is gradually increased (9 wt%) under the condition that the original fluidity is ensured to be unchanged, so that the ore pulp concentration is improved by 3% compared with the original concentration, and the viscosity is maintained at 1128 mPa.s.
Compared with the traditional preparation method, the high-concentration high-fluidity ore pulp prepared by the embodiment has the advantages that the percentage is increased by 3 percent, the stability is higher than 8 hours, hard precipitation is not generated, the apparent viscosity is 1128mPa.s, and the pipeline conveying requirement is met.
Step two, the existing ore pulp production line of certain phosphate ore plants in Shanxi is used for carrying out experiments, and the specific operation process is as follows:
high-frequency vibration generators are additionally arranged on the pulp buffer tank, the outer wall of the grinding equipment, the raw material water buffer tank and the overflowing pipeline of the existing production line respectively, and the concentration and the flowability are tested without changing the original production process conditions.
The experimental procedure was as follows:
(1) the optimum frequency and power were found by multiple experimental studies: frequency 17.13-17.93kHz, power 1.3-1.5w/cm2。
(2) High-frequency vibration generators are respectively installed and opened at the four positions of the raw material water buffer tank, the outer wall of the grinding equipment and the pulp buffer tank and the overflow pipeline.
(3) The raw line material (mineral and water ratio) is kept unchanged, the viscosity of the raw ore pulp is reduced from 1156mpa.s to 876mpa.s, and the ore pulp is obviously thinned (the concentration is not changed, and the mineral substance 'external water' and 'internal water' partially overflow and the particles are compacted).
(4) Adjusting the material ratio of the production line, gradually reducing the addition of water, keeping the addition of mineral substances unchanged, stopping adjusting the material ratio when the viscosity of the ore pulp is consistent with that of the original ore pulp, and increasing the test concentration by 4 percent compared with the original ore pulp concentration.
And step three, on the basis of the step one and the step two, simultaneously implementing two measures to test the superposition effect. The specific operation process is as follows:
the experimental procedure was as follows:
(1) and (4) according to the step one, the concentration of the ore pulp in the production line is improved by 3 percent.
(2) And according to the second step, the concentration of the final testing ore pulp is improved by 7 percent compared with that before the test, and the viscosity is kept at about 1140 mpa.s.
It can be seen from the data of this example that adding component a to the original production line can improve the fluidity and increase the concentration, and using a high frequency vibration generator can also improve the fluidity and the concentration, and implementing both methods simultaneously has better effect, and both have superimposed effect.
Based on example 1, the following groups 1 to 7 were set to compare the parameter changes of example 1, and the specific setting manner and the detection results are shown in the following specific embodiments of groups 1 to 7 and table 1.
Group 1
The specific procedure is identical to that of example 1 above, except that d of component AA＝30μm。
Group 2
The specific procedure is identical to that described in example 1 above, except that component A has an angle of repose of 40 °.
Group 3
The specific procedure was in accordance with example 1 above, except that the amount of component A added was controlled to 4% by weight.
Group 4
The specific procedure was identical to that of example 1 above, except that the amount of component A added was controlled to 20 wt%.
Group 5
The specific procedure was identical to that described in example 1 above, except that the frequency was 80 KHz.
Group 6
The specific procedure was identical to that described in example 1 above, except that the frequency was at 60 KHz.
Group 7
The specific procedure was as in example 1 above, except that the power was 0.2w/cm2。
TABLE 1 test results
From the above analysis of experimental data, example 1, compared with each group, can draw the following conclusions:
(1) example 1 comparison with group 1, except for d of component AA30 μm. The viscosity of the ore pulp is 1158mpa.s under the condition of keeping the same fluidity or similar viscosity, the concentration is only improved by 4.10 percentage points (the 4 percentage points are contributed by vibration), and the d of the component A is shownAThe slurry concentration and fluidity are not improved by 30 μm, and it is found that the fluidity improving effect cannot be obtained if the particle size of the component a is not controlled within the set range.
(2) Example 1, set 2, comparative, except that component a had an angle of repose of 40 °. The viscosity of the ore pulp is 1150mpa.s under the condition of keeping the same fluidity or similar viscosity, the concentration is improved by 4.5 percentage points (4 percentage points are contributed by vibration), which shows that if the angle of repose of the component A is larger, the lubricity is poor, and the improvement of the ore pulp concentration is also helped to a certain extent, but if the angle of repose of the component A is within the set range, the effect is more excellent.
(3) Example 1 was compared to group 3 except that the amount of component A added was controlled at 4 wt%. The viscosity of the ore pulp is 1145mpa.s under the condition of keeping the same fluidity or similar viscosity, and the concentration is improved by 5.5 percent points (4 percent points are contributed by vibration), which indicates that the addition amount of the component A does not reach the optimal state and is helpful for improving the ore pulp concentration, but if the addition amount is too small, the addition amount can also have certain influence.
(4) Example 1 was compared with group 4 except that the amount of component A added was controlled at 20 wt%. The ore pulp viscosity of 1140mpa.s is obtained under the condition of keeping the same fluidity or similar viscosity, the concentration is improved by 7.4 percent, which indicates that the addition amount of the component A exceeds the optimal requirement, the optimal 7.30 percent improvement requirement is achieved, but the addition of excessive component A does not result in great improvement, but increases the cost, so the method is also applicable.
(5) Example 1 was compared to group 5 except that the frequency was at 80 KHz. The viscosity of the pulp was obtained at 1150mpa.s with the same fluidity or similar viscosity, and the pulp consistency increased by 3.10 percentage points (3 percentage points contributed by the addition of component a), indicating that vibration above the specified demand frequency did not contribute much to consistency.
(6) Example 1 was compared to group 6, except that the frequency was at 60 KHz. The pulp viscosity of 1148mpa.s was obtained with the same fluidity or similar viscosity, and the pulp concentration increased by 4.8 percentage points (3 percentage points contributed by the addition of component a), indicating that the closer to the optimum frequency the more optimum was the result.
(7) Example 1 compares with group 7, except that the power is 0.2w/cm2. The pulp viscosity of 1155mpa.s is obtained under the condition of keeping the same fluidity or similar viscosity, and the pulp concentration is improved by 3.22 percentage points (3 percentage points are contributed by adding the component A)) Although the vibration occurs, the effect is not great when the power is insufficient.
Example 2
The method is implemented by a production line of certain noble metal tailings pulp in Guizhou, and the specific operation process is as follows:
step one, through laboratory research, the optimal particle size of the lubricating particles of the tailings is 7 mu m, namely the average particle size d of the component A required by the tailings for preparing ore pulpA7 μm, an angle of repose of 18 ℃ and an addition ratio of 10 wt%.
The ore pulp production line processes 30 tons of raw ore per hour, adopts a ball mill with the diameter of 6 meters and the length of 12 meters, and has the concentration of 72.5 percent and the viscosity of 979mpa.s before modification. The existing production line is reformed, the existing product pulp is led out by 8 percent, water is added to dilute the pulp to 50 percent of concentration, the pulp enters a sand mill for grinding, the average particle size after grinding reaches 7um, and then the ground component A is pumped into a water pipeline of the original production line and enters a ball mill of the original production line together with water and tailing stones for mixing and grinding.
After the transformation is finished, the ratio of the raw materials for production is kept unchanged, the measurement is carried out, the system is respectively adjusted to the optimal index, under the condition that the ratio of the original ore to water is kept unchanged (material: water is 72:18), the ore pulp is obviously thinned, the concentration is still measured to be 72.5%, the viscosity is reduced to 456mpa.s, and the condition of improving the concentration again is indicated; and secondly, adjusting the material ratio of the original production system, reducing water addition, improving the mineral proportion, keeping the viscosity of the original ore pulp at about 979mpa.s, and testing the concentration. After the system is stabilized, the viscosity is 970mpa.s, the concentration is 77.0 percent, and the concentration is improved by 4.5 percent points relative to the concentration before modification.
Step two, the production line of the step one is implemented, and the specific operation process is as follows:
through laboratory research, the high-frequency vibration frequency of the ore pulp is 25.6KHz, and the power is 1.5w/cm2The effect is optimal.
5 high-frequency vibrators are arranged in a collecting tank of ball mill outlet ore pulp reconstructed in an original production line, the frequency is set at 25.6KHz, and the power is 1.5w/cm2。
After the transformation is completed, in the case of no use in the first step of example 2, the influence of high-frequency vibration on the original production line is separately tested (the viscosity is tested under the condition of keeping the concentration of the original ore pulp unchanged). After the system is stabilized, the viscosity is reduced to 520mpa.s, and the concentration is kept unchanged at 72.5%, which shows that the high-frequency vibration plays a great role in the fluidity of the ore pulp, and opens a space for further improving the concentration. The viscosity is kept unchanged, the water adding amount of the system is reduced, the test concentration is increased to 75.7 percent, and the test concentration is increased by 3.2 percent points when no high-frequency vibration exists.
Step three, the production line of the step one is used for implementation, the effect on the original production line is achieved under the effect of the step one and the step two, and the specific operation process is as follows:
according to the modification scheme of the embodiment, the concentration is increased to 80.2% under the condition that the viscosity is not changed through tests, and the concentration is increased by 7.7% compared with that of the original production line, so that the ore pulp can be acted in the first step and the second step at the same time, and the ore pulp is increased by 7.7%.
Based on example 2, the following groups 8 to 19 were set to compare the parameter changes of example 2, and the specific setting manner and the detection results are shown in the following specific embodiments of groups 8 to 19 and tables 2 to 3. Description of the drawings: group 8-group 13 compare the parameter changes of group a without changing other conditions, and group 14-group 19 compare the changes caused by the vibration parameters.
Group 8
The specific procedure is in accordance with example 2, except that component A, component dA＝25um。
Group 9
The specific procedure is identical to example 2, except that the angle of repose of the A component is 35 °.
Group 10
The specific procedure is identical to that of example 2, except that the angle of repose of the A component is 30 °.
Group 11
The specific procedure was identical to that of example 2, except that the proportion of component A added was 4%.
Group 12
The specific procedure was identical to that of example 2, except that the proportion of the A component added was 15%.
Group 13
The specific procedure was identical to that of example 2, except that the proportion of the A component added was 20%.
Group 14
The specific procedure was identical to example 2 except that the vibration frequency was 20.5 KHz.
Group 15
The specific procedure was identical to example 2 except that the vibration frequency was 60.0 KHz.
Group 16
The specific procedure was identical to example 2 except that the vibration frequency was 70.0 KHz.
Group 17
The specific procedure was identical to example 2 except that the vibration frequency was 80.0 KHz.
Group 18
The specific procedure was as in example 2, except that the power was 0.3w/cm2。
Group 19
The specific procedure was as in example 2, except that the power was 2.0w/cm2。
TABLE 2 test results
| Original production line | Example 2 | Group 8 | Group 9 | Group 10 | Group 11 | Group 12 | Group 13 | |
| Viscosity mpa.s | 979 | 970 | 975 | 978 | 973 | 965 | 980 | 981 |
| Concentration wt% | 72.50 | 80.2 | 75.45 | 75.81 | 78..70 | 78.62 | 80.22 | 80.05 |
| Change in concentration | +7.70 | +3.05 | +3.31 | +6.20 | +6.12 | +7.72 | +7.55 |
By comparing the original production line with group a in example 2, and group 8, group 9, group 10, group 11, group 12, and group 13, the following conclusions can be drawn:
(1) compared with the example 2, the original production line can obtain that the ore pulp concentration is improved by 7.7 percent under the condition of adding the optimal component A, and the optimal state is achieved.
(2) Comparing the original production line with example 2 and group 8, it can be seen that the a component does not contribute substantially to the increase in pulp concentration (3% are due to vibration) when the a component does not reach the optimum particle size.
(3) Comparing the original production line with the embodiment 2, the group 9 and the group 10, the more the component A has the repose angle which is 18 degrees away from the optimal repose angle, the more the pulp concentration is improved.
(4) Through the comprehensive comparison of the addition proportion of the component A of the original production line with the components in the embodiment 2 and the groups 11 to 13, the concentration is improved when the addition proportion is less than the optimal addition proportion, but the highest concentration is not reached, the concentration is not greatly improved when the addition proportion is more than the optimal proportion by 15 percent, and when the addition proportion is improved to 20 percent, the concentration begins to decline instead, the cost is increased, and the concentration is improved but is not compensated.
TABLE 3 test results
| Original production line | Example 2 | Group 14 | Group 15 | Group 16 | Group 17 | Group 18 | Group 19 | |
| Viscosity mpa.s | 979 | 970 | 975 | 975 | 973 | 980 | 975 | 981 |
| Concentration wt% | 72.50 | 80.20 | 78.98 | 78.01 | 79..70 | 76.61 | 76.65 | 79.75 |
| Change in concentration | +7.70 | +6.48 | +5.51 | +7.20 | +4.11 | +4.15 | +7.25 |
By comparing the high frequency vibration of the original production line with that of example 2 and groups 14-19, the following conclusions can be drawn:
(1) the more the concentration increases near the optimum frequency can be seen by comparing example 2 with groups 14-17.
(2) From a comparison between example 2 and groups 18-19, it can be seen that when the power is small, the high frequency vibration does not contribute substantially to the concentration increase, and the power is closer to the optimum value and the effect is better.
The original production lines indicated in tables 1 to 3 above refer to the original production lines without any modification, and correspond to blank tests.
Example 3
The other steps were identical to example 2, except that the angle of repose was 10 °.
Example 4
The other procedure was identical to example 2, except that the particle size of component A was 20 μm.
Example 5
The other steps were identical to example 2 except that the A component was added in a proportion of 5%.
Example 6
The other steps were identical to those of example 2 except that the A component was added in a proportion of 8%.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (4)
1. The method for improving the fluidity and the concentration of the ore pulp is characterized by comprising the following steps:
adding micron-grade component A into ore pulp and carrying out high-frequency vibration, wherein the particle size d of the component AAThe repose angle is less than or equal to 30 degrees between 5 and 15 mu m, and the mass percentage of the component A is 5 to 15 percent of the amount of the ore pulp;
the high-frequency vibration mode adopts the frequency of 15-70kHz and the power density of more than or equal to 0.5w/cm2The ultrasonic waves of (4).
2. The process for improving pulp fluidity and consistency according to claim 1, wherein the angle of repose of component a is between 10 ° and 20 °.
3. The process for improving pulp fluidity and consistency according to claim 1, wherein the mass percentage of the component a is 8-10% of the pulp amount.
4. The method for improving pulp fluidity and concentration according to claim 1, wherein the frequency is 17-30kHz and the power density is 1-2w/cm2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010495308.3A CN111594763B (en) | 2020-06-03 | 2020-06-03 | Method for improving fluidity and concentration of ore pulp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010495308.3A CN111594763B (en) | 2020-06-03 | 2020-06-03 | Method for improving fluidity and concentration of ore pulp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111594763A CN111594763A (en) | 2020-08-28 |
| CN111594763B true CN111594763B (en) | 2021-02-05 |
Family
ID=72191672
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010495308.3A Active CN111594763B (en) | 2020-06-03 | 2020-06-03 | Method for improving fluidity and concentration of ore pulp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111594763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113368971A (en) * | 2021-06-11 | 2021-09-10 | 江苏恒丰能环科技股份有限公司 | Method for changing pulping process of rod mill |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174808C (en) * | 2001-12-30 | 2004-11-10 | 南京大学表面和界面化学工程技术研究中心 | Process for preparing slurry with wide granularities distribution by parallel grinders |
| CN100567465C (en) * | 2004-12-10 | 2009-12-09 | 上海精微粉溶机械设备有限公司 | A kind of ultra fine water oil coal mixture fuel slurry and production method thereof |
| CN101008315B (en) * | 2007-02-07 | 2010-07-07 | 邸建友 | Paste-like backfill technology used in coal cutting area |
| CN103911195B (en) * | 2013-01-07 | 2016-06-01 | 大唐国际化工技术研究院有限公司 | A kind of low-rank coal prepares the method for high-concentration coal-water slurry |
| CN105271633B (en) * | 2015-11-27 | 2017-07-07 | 湖南鑫生矿冶废弃物综合利用科技有限公司 | A kind of preparation method for producing glass silica flour |
-
2020
- 2020-06-03 CN CN202010495308.3A patent/CN111594763B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111594763A (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109647630B (en) | Short-process purification method of graphite | |
| CN111594763B (en) | Method for improving fluidity and concentration of ore pulp | |
| CN111116076B (en) | Preparation method of lead-zinc ore tailing sand filling body cementing material | |
| CN104028364A (en) | Multi-metal ore-separating and ore-grinding grading optimization test method | |
| CN111995401A (en) | Preparation method of superfine boron carbide powder | |
| CN110314763A (en) | A method of pellet feed is prepared using fine ore | |
| CN103706462B (en) | The hierarchical processing method of Micron-Sized Copper Powders Coated | |
| JP6581164B2 (en) | Molybdenum disulfide powder and method and apparatus for producing the same | |
| CN111530564B (en) | High-concentration high-fluidity ore pulp and preparation method thereof | |
| CN101245918B (en) | Novel pulping method for hyperfine water-coal-slurry | |
| CN207537412U (en) | Graphene OIL IN LUBRICATING OIL PRODUCTION device | |
| CN109735234A (en) | A kind of polishing consumptive material and preparation method thereof and injection pressure equipment | |
| CN114773880B (en) | Superfine heavy calcium carbonate and preparation method thereof | |
| CN106622498B (en) | Grinding roller fluid pressure type superfine mill | |
| CN115584287A (en) | Naphthalene dispersant for preparing nano hydrocarbon fuel and application thereof | |
| CN113368971A (en) | Method for changing pulping process of rod mill | |
| CN208526927U (en) | A kind of production line of water-saving high solids content slurry | |
| CN113399093A (en) | Method for preparing spheroidal powder by mechanical crushing method and spheroidal powder | |
| CN102179512A (en) | Method for preparing cobalt coated nano tungsten carbide hard alloy spraying powder | |
| CN109569845A (en) | Ultrafine kaolin level Four powder manufacturing apparatus and ultrafine kaolin and its level Four p owder production technique | |
| CN104556165A (en) | Production method of white alundum micropowder for precise resin grinding wheels | |
| CN112989504B (en) | Optimization method of vertical sand silo dynamic high-concentration fluidized sand discharging technology | |
| CN114260067B (en) | Grinding method for slurry difficult to grind | |
| CN1410379A (en) | Method of producing high performance cement using cascade grinder | |
| CN115746823B (en) | Epoxy resin-based composite propping agent and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221017 Address after: 210013 21 Pomegranate Finance and Intelligence Center No. 6, Stone City, Gulou District, Nanjing City, Jiangsu Province Patentee after: Jiangsu Marubeni Carbon Technology Co.,Ltd. Address before: 1202, unit 3, 11 / F, building 3, courtyard 400, Zhongdong Road, Dongxiaokou Town, Changping District, Beijing Patentee before: Beijing coal chemical (Beijing) Technology Co.,Ltd. |