CN102716796B - Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property - Google Patents
Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property Download PDFInfo
- Publication number
- CN102716796B CN102716796B CN201210201299.8A CN201210201299A CN102716796B CN 102716796 B CN102716796 B CN 102716796B CN 201210201299 A CN201210201299 A CN 201210201299A CN 102716796 B CN102716796 B CN 102716796B
- Authority
- CN
- China
- Prior art keywords
- ore
- disintegrating machine
- mill
- energy consumption
- coefficient
- 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
- 238000003801 milling Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000000227 grinding Methods 0.000 claims abstract description 56
- 238000005265 energy consumption Methods 0.000 claims abstract description 50
- 238000012360 testing method Methods 0.000 claims description 23
- 238000002360 preparation method Methods 0.000 claims description 22
- 238000005029 sieve analysis Methods 0.000 claims description 20
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims description 19
- 238000013507 mapping Methods 0.000 claims description 10
- 238000013467 fragmentation Methods 0.000 claims description 7
- 238000006062 fragmentation reaction Methods 0.000 claims description 7
- 238000006467 substitution reaction Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004364 calculation method Methods 0.000 abstract description 4
- 235000019580 granularity Nutrition 0.000 abstract 7
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000002245 particle Substances 0.000 description 5
- 238000004134 energy conservation Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000009795 derivation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical group [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Abstract
The invention relates to a method for determining mill feeding granularity of ore in an ore treatment plant based on milling device property. The method is characterized in that aiming at the problem that the built ore treatment plant can not determine optimal mill feeding granularity, unit ore crushing energy consumption corresponding to different ore discharge granularities is obtained through changing the width of a throat of a fine crusher, and the ore crushing energy consumption coefficient is determined; and through changing the ore feeding amount of a ball mill, the unit ore milling energy consumption corresponding to different ore milling granularities is obtained, the ore crushing energy consumption coefficient is determined, and then the mill feeding granularity when the crushing and grinding energy consumption of the ore treatment plant is the lowest is obtained according to an optimal mill feeding granularity calculation formula. By adopting the mill feeding granularity to conduct ore crushing and milling, the ore treatment plant can realize ore milling with low energy consumption, saves ore crushing and milling cost, and improves the economic benefits.
Description
Technical field
The present invention relates to a kind ofly determine the method for ore dressing plant ore mill feed size to belong to the technique of preparing field based on the comminution equipment performance.
Background technology
In the industries such as ore dressing, metallurgy, building materials, grinde ore is an important production link.Particularly at Mineral Processing Industry, grinde ore is realized the monomer dissociation between valuable mineral and the gangue mineral, and the energy of consumption accounts for 40% to 60% of ore dressing total energy consumption.Energy-conservation in the grinde ore process is one of hot issue of ore dressing field research always.
Grinde ore generally will experience two stages, the one, ore reduction, the one, ore grinding.The broken body that controlled movement system is generally adopted in ore reduction to ore exert pressure, impact, shearing etc., ore is deformed breaks to strength degree.Ore grinding generally adopts motion to be difficult in check milling medium ore is impacted, grind to shell and ore is attenuated.Although dual mode has all played the effect that ore grain size is attenuated, the energy that needs is different, and generally speaking, the energy that breaking ores needs will be lower than the energy that levigate ore needs, therefore the how broken principle of wearing into less as ore comminution process energy conservation.
In the shattering process, along with attenuating of ore grain size, further broken needed energy can increase, when surpassing certain granularity boundary, the muck energy consumption is higher than power consume on the contrary, so how broken few mill also is limited, for this limit, go back so far the applicable computational methods of neither one.
Ma Zhengxian has analyzed the relation between mill feed size and mill output and the power consumption in " dwindle mill feed size and reduce the crushing system energy consumption to improve mill efficiency " literary composition, show and dwindle effectively Increasing Production and Energy Saving of mill feed size, proposed simultaneously to make the simple computation formula of hour best mill feed size of crushing system total energy consumption.As evidence, provided the example that dwindles grinding machine Increasing Production and Energy Saving after the granularity, and done concise and to the point elaboration to dwindling problem and the main countermeasure that mill feed size exists.But this computing formula belongs to experimental, does not have universality.Bond has proposed to be suitable for people's abrasive particle degree of grindability material:
But in fact this also is an empirical equation, work index W wherein
iUnder different grinding particle sizes, even the same ore, neither constant, this brings difficulty to calculating.For this formula, Li Wen has delivered the paper of " calculate reasonable mill feed size and should not directly use simple list moral formula ", points out in the paper that the someone proposes directly to calculate with the crushing work exponential sum grinding work index of list moral the reasonable feed preparation unit size of grinding machine.If considered the particle size after cracking lower limit of disintegrating machine, the feed preparation unit size upper limit of ore mill, and when having considered to surpass this limit, having calculated respectively after the various corrections that power consumption can increase and having chosen the minimum grinding particle size of its total power consumption after the power consumption of fragmentation and ore grinding is desirable naturally, but, if directly use simple list moral formula, then no matter whether ore grinding and fragmentation are adopted same work index, all untenable on mathematics.
Magdalinovic, N.M. points out Bond's power dissipation index W in " the required power consumption calculation of ball mill in the grinding process " literary composition
iAs an index weighing ore grindability, it is not invariable, but along with the variation of ore milling product fineness changes.Therefore, when given ore milling product fineness, work index the unknown, use the energy consumption formula to calculate the grinding process energy consumption and mistake will occur in practice.
Therefore, up to now, can calculate power consume, the formula that calculates mill feed size by power consume remains Bond's work index formula, but this formula is empirical equation, and the mensuration of work index is subjected to the impact of grinding particle size, it or not a constant, result of calculation and actual very large error arranged, so, the method that neither one can be determined suitable mill feed size gone back.
Summary of the invention
The objective of the invention is for the ore dressing plant of having built up, a kind of method of determining ore dressing plant ore mill feed size based on the comminution equipment performance is provided, by testing definite coefficient of energy dissipation, adopt Computer Corp. to calculate the mill feed size of the low energy consumption of ore ore grinding, for the comminution Energy Conservation supplies a kind of feasible method.
The present invention is achieved through the following technical solutions:
(1) mensuration of fragmentation and power consume coefficient:
Muck energy consumption formula
In muck coefficient of energy dissipation K
1Definite by testing, at ore dressing plant disintegrating machine feed preparation unit size d
fIn the situation about determining, regulate spallar gape width, by changing mine-supplying quantity disintegrating machine is operated at full capacity, measure the power consumption of disintegrating machine, by to the crushed product sieve analysis, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores with the disintegrating machine power consumption; Readjust disintegrating machine gape width, change mine-supplying quantity to disintegrating machine and operate at full capacity, measure the power consumption of disintegrating machine, to the sieve analysis of disintegrating machine ore discharge, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores corresponding to another ore discharge granularity with the disintegrating machine power consumption; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pCorresponding specific energy consumption W, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is muck coefficient of energy dissipation K
1
The power consume formula
In the power consume COEFFICIENT K
2Definite by testing, the ore mill feed preparation unit size d in the ore dressing plant
fIn certain situation, change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore milling product granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit with power consumption of the mill; Again change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit corresponding to another ore discharge granularity with power consumption of the mill; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pThe corresponding ore power consume W of unit, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is the power consume COEFFICIENT K
2
(2) the ore mill feed size determines
With the muck coefficient of energy dissipation K that measures
1, the power consume COEFFICIENT K
2, broken feed preparation unit size d
fSubstitution ore dressing plant mill feed size computing formula
, the mill feed size d when calculating acquisition comminution energy consumption is minimum
0
Know-why of the present invention:
In the ore reduction stage, according to a large amount of production practices, in the Designing Ore-Dressing Plants, the empirical equation that the production capacity of disintegrating machine is calculated is:
In the formula: K
4-ore hardness coefficient;
K
5-ore bulkfactor;
K
6-ore feeding granularity coefficient;
K
7-ore Water coefficient;
q
sUnder-the standard state, the production capacity of disintegrating machine, t/h;
q
0The production capacity of-unit gape, t/h;
K
eThe coefficient of relationship of-gape width and ore discharge granularity;
d
p-ore discharge granularity, the ore discharge granularity of long-pending 80% correspondence of burden, micron.
In order to obtain muck energy consumption formula, calculate empirical equation as foundation take the disintegrating machine production capacity of Designing Ore-Dressing Plants, carry out following mathematical derivation.
Order
, then
Q=K
0d
p
The energy of disintegrating machine output is certain, and the ore discharge granularity is less, and the disintegrating machine disposal ability is just less, and unit ore reduction energy consumption is just higher.If the input energy of disintegrating machine is W
z, then unit ore reduction energy consumption is:
Order
, then
Above-mentioned formula is at d
f=d
pThe time, the boundary condition of W=0 is false, and sets up in order to make boundary condition, adds a coefficient C at formula, and formula is become:
Work as d
f=d
pThe time, W=0, boundary condition can draw C=-k thus
1, then
In the formula:
(1) formula is exactly the energy consumption formula of crusher in crushing ore, muck coefficient of energy dissipation K
1The coefficient relevant with the disintegrating machine performance with ore properties.
During the ore ore grinding, Bond by the empirical equation that a large amount of production practice data obtains energy consumption is:
In the formula: W
iThe work index that grinds for ore,
In the certain situation of feed preparation unit size, Bond's power consume empirical equation can be converted into
Order
, then
(2) formula is the power consume formula, the power consume COEFFICIENT K
2The coefficient relevant with the grinding machine performance with ore properties.
The mill feed size computing formula that energy consumption is minimum:
When the feed preparation unit size of muck equipment certain, the ore discharge granularity of grinding machine one regularly, the ore discharge of spallar be grinding machine to the ore deposit, the energy consumption of muck and ore grinding be muck energy consumption and power consume with.But, when the grinding machine feed preparation unit size changes, the K in (2) formula
2Not constant, because wherein comprised the mill feed size that changes
So,, (2) formula should be changed into
According to formula (1) and (3), make the ore discharge granularity of muck equal the feed preparation unit size of ore grinding, and use d
0Expression, the total energy consumption that can get muck and ore grinding is
In the formula: W
BgBe muck and ore grinding total energy consumption, kW.h/t; d
0Be mill feed size (screen size that 80% ore passes through), μ m; d
fBe spallar feed preparation unit size (screen size that 80% ore passes through); d
pBe grinding machine ore discharge granularity (screen size that 80% ore passes through).
Ask partial derivative to get to (4) formula:
（5）
Order
, can get
（6）
Will
Convert K to
2:
(7) formula is the mill feed size formula of comminution energy consumption when minimum.
The present invention has the following advantages and good effect:
1, Bond's mill feed size empirical equation
But during grinding machine ore discharge change of granularity, formula is inapplicable, and this formula does not relate to the factors such as performance of disintegrating machine, ore mill, so occur very large deviation even mistake when using, mill feed size computing formula of the present invention derives from through the muck energy consumption of a large amount of practice tests and power consume formula, and determines coefficient of energy dissipation by actual tests, result of calculation is coincide with actual, has very strong adaptability.
2, owing to can only be Bond's formula by the mill feed size computing formula that everybody accepts, and Bond's formula exists defective and deficiency, so far there is not good way to determine best mill feed size, the present invention is take the empirical equation that facts have proved in a large number as foundation, obtain the mill feed size computing formula through mathematical derivation, detect muck and power consume coefficient by reality, calculate mill feed size, for how broken few mill determines that quantitatively mill feed size provides a kind of reliable method.
3, this invention does not have specific requirement to ore, and definite method of mill feed size has universality, for the ore dressing plant of having built up, after overtesting detects coefficient of energy dissipation, determines best mill feed size, can reach the energy-conservation purpose of comminution.
Description of drawings
Fig. 1 is the method flow diagram of determining ore dressing plant ore mill feed size based on the comminution equipment performance of the present invention.
The specific embodiment
Embodiment 1:
The processing ore is mixed copper ore, and disintegrating machine is Sandvik H6800 circular cone spallar, and ore mill is MQG3600 * 6000 ball mills.
(1) mensuration of fragmentation and power consume coefficient
Muck energy consumption formula
In muck coefficient of energy dissipation K
1Definite by testing, at ore dressing plant disintegrating machine feed preparation unit size d
fIn the situation about determining, regulate spallar gape width, by changing mine-supplying quantity disintegrating machine is operated at full capacity, measure the power consumption of disintegrating machine, by to the crushed product sieve analysis, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores with the disintegrating machine power consumption; Readjust disintegrating machine gape width, change mine-supplying quantity to disintegrating machine and operate at full capacity, measure the power consumption of disintegrating machine, to the sieve analysis of disintegrating machine ore discharge, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores corresponding to another ore discharge granularity with the disintegrating machine power consumption; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pCorresponding specific energy consumption W, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is muck coefficient of energy dissipation K
1, numerical value is 0.394.
The power consume formula
In the power consume COEFFICIENT K
2Definite by testing, the ore mill feed preparation unit size d in the ore dressing plant
fIn certain situation, change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore milling product granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit with power consumption of the mill; Again change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit corresponding to another ore discharge granularity with power consumption of the mill; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pThe corresponding ore power consume W of unit, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is the power consume COEFFICIENT K
2, numerical value is 3.194.
(2) the ore mill feed size determines
With the muck coefficient of energy dissipation K that measures
1Be 0.394, the power consume COEFFICIENT K
2Be 3.194, spallar feed preparation unit size d
fBe the 40mm substitution
, the mill feed size d that calculative determination comminution energy consumption is minimum
0Be 9.87mm.
Embodiment 2:
The processing ore is copper-sulphide ores, and disintegrating machine is PYY2200 * 130 circular cone spallars, and ore mill is MQG3600 * 6000 ball mills.
(1) mensuration of fragmentation and power consume coefficient
Muck energy consumption formula
In muck coefficient of energy dissipation K
1Definite by testing, at ore dressing plant disintegrating machine feed preparation unit size d
fIn the situation about determining, regulate spallar gape width, by changing mine-supplying quantity disintegrating machine is operated at full capacity, measure the power consumption of disintegrating machine, by to the crushed product sieve analysis, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores with the disintegrating machine power consumption; Readjust disintegrating machine gape width, change mine-supplying quantity to disintegrating machine and operate at full capacity, measure the power consumption of disintegrating machine, to the sieve analysis of disintegrating machine ore discharge, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores corresponding to another ore discharge granularity with the disintegrating machine power consumption; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pCorresponding specific energy consumption W, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is muck coefficient of energy dissipation K
1, numerical value is 0.411.
The power consume formula
In the power consume COEFFICIENT K
2Definite by testing, the ore mill feed preparation unit size d in the ore dressing plant
fIn certain situation, change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore milling product granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit with power consumption of the mill; Again change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit corresponding to another ore discharge granularity with power consumption of the mill; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pThe corresponding ore power consume W of unit, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is the power consume COEFFICIENT K
2, numerical value is 3.086.
(2) the ore mill feed size determines
With the muck coefficient of energy dissipation K that measures
1Be 0.411, the power consume COEFFICIENT K
2Be 3.086, spallar feed preparation unit size d
fBe the 48mm substitution
, the mill feed size d that calculative determination comminution energy consumption is minimum
0Be 12.78mm.
Embodiment 3:
The processing ore is iron ore, and disintegrating machine is Nordberg HP400 circular cone spallar, and ore mill is MQG3600 * 4500 ball mills.
(1) mensuration of fragmentation and power consume coefficient
Muck energy consumption formula
In muck coefficient of energy dissipation K
1Definite by testing, at ore dressing plant disintegrating machine feed preparation unit size d
fIn the situation about determining, regulate spallar gape width, by changing mine-supplying quantity disintegrating machine is operated at full capacity, measure the power consumption of disintegrating machine, by to the crushed product sieve analysis, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores with the disintegrating machine power consumption; Readjust disintegrating machine gape width, change mine-supplying quantity to disintegrating machine and operate at full capacity, measure the power consumption of disintegrating machine, to the sieve analysis of disintegrating machine ore discharge, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores corresponding to another ore discharge granularity with the disintegrating machine power consumption; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pCorresponding specific energy consumption W, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is muck coefficient of energy dissipation K
1, numerical value is 0.401.
The power consume formula
In the power consume COEFFICIENT K
2Definite by testing, the ore mill feed preparation unit size d in the ore dressing plant
fIn certain situation, change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore milling product granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit with power consumption of the mill; Again change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit corresponding to another ore discharge granularity with power consumption of the mill; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pThe corresponding ore power consume W of unit, with
Be abscissa, W is the ordinate mapping, gets a straight line, and the slope of straight line is the power consume COEFFICIENT K
2, numerical value is 3.186.
(2) the ore mill feed size determines
With the muck coefficient of energy dissipation K that measures
1Be 0.401, the power consume COEFFICIENT K
2Be 3.186, spallar feed preparation unit size d
fBe the 42mm substitution
, the mill feed size d that calculative determination comminution energy consumption is minimum
0Be 10.57mm.
Claims (2)
1. determine to it is characterized in that the method for ore dressing plant ore mill feed size carrying out according to the following steps based on the comminution equipment performance for one kind:
(1) mensuration of fragmentation and power consume coefficient:
Muck energy consumption formula:
In muck coefficient of energy dissipation K
1Definite by testing, at ore dressing plant disintegrating machine feed preparation unit size d
fIn the situation about determining, regulate spallar gape width, by changing mine-supplying quantity disintegrating machine is operated at full capacity, measure the power consumption of disintegrating machine, by to the crushed product sieve analysis, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores with the disintegrating machine power consumption; Readjust disintegrating machine gape width, change mine-supplying quantity to disintegrating machine and operate at full capacity, measure the power consumption of disintegrating machine, to the sieve analysis of disintegrating machine ore discharge, corresponding ore discharge granularity d when obtaining the long-pending productive rate of burden and being 80%
p, divided by the disintegrating machine mine-supplying quantity, obtain the specific energy consumption kWh/t of breaking ores corresponding to another ore discharge granularity with the disintegrating machine power consumption; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pCorresponding specific energy consumption Wb, with
Be abscissa, Wb is the ordinate mapping, gets a straight line, and the slope of straight line is muck coefficient of energy dissipation K
1
The power consume formula:
In the power consume COEFFICIENT K
2Definite by testing, the ore mill feed preparation unit size d in the ore dressing plant
fIn certain situation, change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore discharge granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit with power consumption of the mill; Again change the mine-supplying quantity of grinding machine, grinding machine is operated at full capacity, measure the power consumption of grinding machine, the granularmetric composition of sieve analysis ore milling product obtains the ore discharge granularity d that burden amasss productive rate 80% correspondence
p, divided by mine-supplying quantity, obtain the ore power consume kWh/t of unit corresponding to another ore discharge granularity with power consumption of the mill; Carry out successively 5 tests, obtain 5 groups of ore discharge granularity d
pThe corresponding ore power consume Wg of unit, with
Be abscissa, Wg is the ordinate mapping, gets a straight line, and the slope of straight line is the power consume COEFFICIENT K
2
(2) the ore mill feed size determines
With the muck coefficient of energy dissipation K that measures
1, the power consume COEFFICIENT K
2, broken feed preparation unit size d
fSubstitution ore dressing plant mill feed size computing formula
, the mill feed size d when calculating acquisition comminution energy consumption is minimum
0
2. according to claim 1ly determine to it is characterized in that the method for ore dressing plant ore mill feed size the ore dressing plant of described ore dressing plant for having built up based on the comminution equipment performance.
3. according to claim 1ly determine the method for ore dressing plant ore mill feed size to it is characterized in that described disintegrating machine is the circular cone spallar in small, broken bits that the gape width can be regulated based on the comminution equipment performance.
4. according to claim 1ly determine the method for ore dressing plant ore mill feed size to it is characterized in that described ore mill is one section ball mill based on the comminution equipment performance.
5. according to claim 1ly determine to it is characterized in that the method for ore dressing plant ore mill feed size that described ore is the ore that the needs that use in the ore dressing plant carry out muck and ore grinding based on the comminution equipment performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201299.8A CN102716796B (en) | 2012-06-19 | 2012-06-19 | Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201299.8A CN102716796B (en) | 2012-06-19 | 2012-06-19 | Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102716796A CN102716796A (en) | 2012-10-10 |
| CN102716796B true CN102716796B (en) | 2013-04-03 |
Family
ID=46942741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210201299.8A Active CN102716796B (en) | 2012-06-19 | 2012-06-19 | Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102716796B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607301B (en) * | 2014-12-24 | 2016-12-07 | 昆明理工大学 | A kind of method determining the optimal mill feed size of Ore |
| CN111241691B (en) * | 2020-01-16 | 2023-04-07 | 鞍钢集团矿业有限公司 | Method for determining size and proportion of ore grinding medium of first-stage ball mill |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430461A (en) * | 2011-10-21 | 2012-05-02 | 昆明理工大学 | Method of determining particle sizes of ore needed in ore grinding process |
-
2012
- 2012-06-19 CN CN201210201299.8A patent/CN102716796B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430461A (en) * | 2011-10-21 | 2012-05-02 | 昆明理工大学 | Method of determining particle sizes of ore needed in ore grinding process |
Non-Patent Citations (10)
| Title |
|---|
| 《入磨粒度对原料易磨性的影响——兼对JC/T734—2005标准商榷》;罗帆;《水泥》;20100531(第5期);14-17 * |
| 《细碎——粉磨技术》;钱汝中;《建材发展导向》;19890331(第3期);32-34 * |
| 《缩小入磨粒度以提高粉磨效率降低粉碎系统能耗》;马正先;《中国建材科技》;19950630;第4卷(第3期);29-32 * |
| 《选矿过程自动检测与自动化综述》;李振兴等;《云南冶金》;20080630;第37卷(第3期);13-17 * |
| 《难磨铝土矿两段磨矿的磨机选型计算》;武国宝;《有色设备》;20110630(第6期);20-24 * |
| 李振兴等.《选矿过程自动检测与自动化综述》.《云南冶金》.2008,第37卷(第3期), |
| 武国宝.《难磨铝土矿两段磨矿的磨机选型计算》.《有色设备》.2011,(第6期), |
| 罗帆.《入磨粒度对原料易磨性的影响——兼对JC/T734—2005标准商榷》.《水泥》.2010,(第5期), |
| 钱汝中.《细碎——粉磨技术》.《建材发展导向》.1989,(第3期), |
| 马正先.《缩小入磨粒度以提高粉磨效率降低粉碎系统能耗》.《中国建材科技》.1995,第4卷(第3期), |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102716796A (en) | 2012-10-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100478076C (en) | The method of accurate loading-and-filling ball of two sections of milling mine | |
| CN102240588B (en) | Dry-grinding and dry-separation method of magnetite | |
| Dundar et al. | Application of population balance model to HPGR crushing | |
| Nadolski et al. | An energy benchmarking model for mineral comminution | |
| Bascetin A.* & Nieto | Determination of optimal cut-off grade policy to optimize NPV using a new approach with optimization factor | |
| Altun et al. | Operational parameters affecting the vertical roller mill performance | |
| CN104668056B (en) | A kind of valuable mineral ore steel ball size harder than gangue mineral that grind determines method | |
| CN100469451C (en) | Accurate method for improving production and saving energy by combining ball lLoad and addition in mill and forward leading of energy consumption | |
| CN104028364A (en) | Multi-metal ore-separating and ore-grinding grading optimization test method | |
| Jankovic et al. | Evaluation of dry grinding using HPGR in closed circuit with an air classifier | |
| Magdalinovic et al. | The optimal ball diameter in a mill | |
| CN112347689A (en) | Discrete element method-based semi-autogenous mill lining plate shape optimization method | |
| Wang et al. | Energy and cost comparisons of HPGR based circuits with the SABC circuit installed at the huckleberry mine | |
| CN103617456A (en) | Operating index optimization method in beneficiation process | |
| Dündar | Investigating the benefits of replacing hydrocyclones with high-frequency fine screens in closed grinding circuit by simulation | |
| CN102716796B (en) | Method for determining mill feeding granularity of ore in ore treatment plant based on milling device property | |
| CN104607301B (en) | A kind of method determining the optimal mill feed size of Ore | |
| CN203033769U (en) | Phosphate-pulp producing and breaking system | |
| Keshav et al. | Optimisation of the secondary ball mill using an on-line ball and pulp load sensor–the Sensomag | |
| Rosa et al. | Comparing ball and vertical mills performance: An industrial case study | |
| Saramak | Optimizing the performance of high-pressure grinding roll based ore enrichment circuits | |
| Bracey et al. | Performance evaluation of the novel multi-shaft mill using DEM modelling | |
| Craig | Grinding mill modeling and control: past, present and future | |
| CN102706784B (en) | Method for determining grinding granularity of ores based on ore properties | |
| Nordell et al. | Novel comminution machine may vastly improve crushing-grinding efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |