CN113758549A - A fast method for measuring the weight of flotation foam products - Google Patents
A fast method for measuring the weight of flotation foam products Download PDFInfo
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- CN113758549A CN113758549A CN202111022857.XA CN202111022857A CN113758549A CN 113758549 A CN113758549 A CN 113758549A CN 202111022857 A CN202111022857 A CN 202111022857A CN 113758549 A CN113758549 A CN 113758549A
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- weight
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- flotation
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- foam
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- 239000006260 foam Substances 0.000 title claims abstract description 91
- 238000005188 flotation Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000012360 testing method Methods 0.000 claims abstract description 49
- 239000007787 solid Substances 0.000 claims abstract description 20
- 238000007667 floating Methods 0.000 claims description 4
- 239000011343 solid material Substances 0.000 claims description 4
- 239000004088 foaming agent Substances 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims 1
- 238000007796 conventional method Methods 0.000 abstract description 4
- 239000000047 product Substances 0.000 description 84
- 239000012467 final product Substances 0.000 description 8
- 238000005303 weighing Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
本发明提供一种快速测量浮选泡沫产品重量的方法，包括：步骤0：按试验方案，预设泡沫产品重量的最小值Gs和最大值Gb，将Gb‑Gs分成n个等间隔的重量范围，测量n个范围重量的密度δi，i＝1、2…n，计算平均密度δ；步骤1：浮选时，将泡沫产品刮入有容积刻度的接样器中；步骤2：预先称接样器的重量M1；步骤3：浮选结束后，从接样器读出矿浆体积V，称取装矿浆的接样器重量M2，计算矿浆重量M；步骤4：计算泡沫产品中固体重量m；步骤5：根据m值范围，采用相应δi值重新计算泡沫产品中固体重量mi。另外，同一矿石，δi只需测量一次；若δi与δ差值的绝对值小于3～5％，无需进行步骤5。与常规方法相比，此方法测量快速高效，不改变矿浆形态。The invention provides a method for rapidly measuring the weight of a flotation foam product, comprising: Step 0: according to a test plan, preset the minimum value G s and the maximum value G b of the weight of the foam product, and divide the G b -G s into n, etc. For the weight range of the interval, measure the density δi of the weight of n ranges, i=1, 2...n, and calculate the average density δ; Step 1: During flotation, scrape the foam product into the sample receiver with volume scale; Step 2 : Pre-weigh the weight M1 of the sample receiver; Step 3: After the flotation is completed, read the volume V of the pulp from the sample receiver, weigh the weight M2 of the sample receiver loaded with the pulp, and calculate the weight M of the pulp; Step 4: Calculate the foam product Medium solid weight m; Step 5: According to the m value range, use the corresponding δ i value to recalculate the solid weight m i in the foam product. In addition, for the same ore, δ i only needs to be measured once; if the absolute value of the difference between δ i and δ is less than 3-5%, step 5 is unnecessary. Compared with conventional methods, this method is fast and efficient, and does not change the pulp morphology.
Description
Technical Field
The invention relates to the technical field of flotation tests, in particular to a method for quickly measuring the weight of a flotation foam product.
Background
The flotation test is an important means for judging the floatability of the ore, determining the proper conditions for the ore flotation and achieving the flotation indexes, and provides a basis for the design and construction of a dressing plant and the adjustment of the flotation production process. Flotation tests typically calculate product yield from the product weight of the floating froth and the product weight in the cell that does not float; analyzing the product to obtain the grade; and calculating the recovery rate according to the yield and the grade. It can be seen that the weight and grade of the flotation product are two important raw data for calculating the flotation test index. For the yield, generally, solid-liquid separation is carried out on the foam product and the product in the tank, and the yield is calculated after the solid phase is dried and weighed. Because the amount of raw ore is constant, the sum of the weight of the foam product and the weight of the product in the tank is a constant value, namely, if the weight of the foam product is measured, the yield can be calculated more accurately. For the grade, generally need to foam product and trough product solid-liquid separation, the solid phase is dried and weighed the assay analysis after to get, experienced technical staff can be according to the test phenomenon and the color, gloss of product, etc., judge the approximate grade. In the flotation test, reasonable yield is a necessary prerequisite for obtaining proper conditions and reasonable indexes of flotation. It follows that the foam product weight is an important technical parameter. The rapid acquisition of the froth product weight is an important prerequisite for effective adjustment of flotation conditions. The traditional method for obtaining the weight of the foam product comprises the following steps: 1) the foam product is a final product of a test, and a solid-liquid separation-drying-weighing method can be adopted; 2) the foam product is not a final product of the test, and needs to be further sorted, for example, the rough concentrate of flotation needs to be concentrated; the middlings of the closed-circuit test need to be returned for recleaning, and the middlings comprise scavenging foam and concentration tailings, namely products in a concentration tank. There are problems in that: 1) when the foam product is a final product of a test, the solid-liquid separation-drying-weighing method adopted is slow in speed and long in time consumption, cannot meet the effect of an instant adjusting condition, and is only used as an evaluation basis of a test effect; 2) when the foam product is not a final product of a test, the judgment of the amount generally only depends on estimation, the error is 50 percent and even exceeds 100 percent, more than half of the test is not suitable, so the test times are increased, such as a closed circuit test, the closed circuit is often carried out for 7-8 times, and the times are more if the foam product is multi-metal separation. Not only is the cost increased, but also much time and resources are wasted. The invention can quickly measure the weight of the solid material in the foam product, is convenient to operate, saves time and labor, does not change the shape and the property of ore pulp, and provides support for the adjustment of the flotation condition at any time.
Disclosure of Invention
In order to overcome the defects in the background technology, the invention provides a method for quickly measuring the weight of a flotation froth product, compared with the conventional method, the method has the advantages of high speed, immediate measurement, no change of the form and the property of ore pulp, test efficiency improvement and effect improvement.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for rapidly measuring the weight of a flotation froth product comprising the steps of:
step 0: presetting the weight range G of the floating foam product according to the flotation test schemesAnd Gb，GsAt the minimum of the product weight range, GbFor the maximum value of the product weight range, the product weight range Gb-GsThe average is divided into n parts, the adjacent 2 parts are separated by J, J ═ Gb-Gs) N, i.e. Gb＝Gs+ nJ; j is one n times of weight range interval, n times of batch foam sweeping exploration tests are carried out, and the weight of the ith foam product is respectively positioned in [ Gs+(i-1)J]～(Gs+ iJ), i is 1, 2 … … n, when i is 1, 2 … …, n-1,n is G, the corresponding weight ranges are respectivelys～(Gs+J)、(Gs+J)～(Gs+2J)、……、[Gs+(n-2)J]～[Gs+(n-1)J]、[Gs+(n-1)J]～Gb. The density of n foam products was measured and filled into the table. Calculating an average density value delta, wherein delta is sigma delta i/n, delta i is the density of the foam product in the ith weight range, i is 1 and 2 … … n, the absolute value of the difference between a certain density and the average density is less than 3-5%, and the average density delta is adopted.
| [Gs+(i-1)J]～(Gs+iJ) | Gs～(Gs+J) | (Gs+J)～(Gs+2J) | …… | [Gs+(n-2)J]～[Gs+(n-1)J] | [Gs+(n-1)J]～Gb |
| δi | δ1 | δ2 | …… | δn-1 | δn |
| δiValue, g/cm3 |
Step 1: performing flotation according to a flotation test scheme, and scraping a flotation foam product into a sample receiving device with volume scales;
step 2: weighing the weight M1 of the sample receiver in advance;
and step 3: after the flotation is finished, reading the volume V of the ore pulp by the sample receiver; weighing the sample receiving weight M2 with the ore pulp, wherein the ore pulp weight M is as follows: M-M2-M1;
and 4, step 4: the weight m of solids in the foam product was calculated using the formula:
wherein m is the weight of solids in the foam product, g; delta is the density of the solids in the foam product, g/cm3I.e., g/ml; m foam product pulp weight, g; v, the volume of the foam product pulp is ml;
and 5: according to the range of step 0 in which the value m of the weight of the solids in the foamed product is within, the corresponding delta is usediValue recalculation of the weight m of solids in the foam producti
Step 6: according to the weight m of solids in the foamed productiAdjusting the test conditions;
density of solid material in same ore and foam productδiOnly one measurement is needed, namely, the step 0 is not needed in the next test; if a certain density deltaiThe absolute value of the difference value of the density delta and the average density delta is less than 3-5%, and the step 5 is not needed.
Furthermore, the sample receiver is a beaker, a conical flask or a measuring cylinder with volume scales, the size of the sample receiver is determined according to the weight or the volume of the foam product, and if the sample receiver is small in opening, a funnel can be added.
Further, the adjusting in step 5 includes: and if the weight of the product is less than the preset value, continuing adding chemicals for flotation until the weight of the product reaches the preset value, and stopping flotation. After the flotation is finished, if foam remains in the flotation tank, the addition amount of the collecting agent or the foaming agent can be reduced as required in the next test.
Compared with the prior art, the invention has the beneficial effects that:
1) when the foam product is a final product of a test, compared with the traditional solid-liquid separation-drying-weighing method, the method is convenient and fast (the drying generally needs longer time). The instant and fast measurement is beneficial to flexibly controlling the flotation condition. If the amount is not enough, continuing to scrape bubbles, and supplementing the medicament if the foam is not enough; sufficient, i.e. stopping the flotation;
2) when the foam product is not the final product of the test, the method does not change the form and the property of the product, so that the quantity of the foam product is mastered, and the subsequent selection is not influenced; for closed-circuit test, the concentration tailings are products in the tank, but the raw ore and the concentrate in the concentration operation are foam products, the method can simply calculate the amount of the concentration tailings, so that the ore amount in each closed-circuit test is mastered, the control and adjustment of conditions in the test process are facilitated, and the balance of the closed-circuit test amount is realized;
3) if the scraper, the foam guide or the sample receiver wall is attached with foam product, the foam product can be washed, and the washing water does not influence the final result value of the invention.
Detailed Description
The following describes in detail specific embodiments of the present invention.
A method for rapidly measuring the weight of a flotation froth product comprising the steps of:
step 0: presetting the weight range G of the floating foam product according to the flotation test schemesAnd Gb，GsAt the minimum of the product weight range, GbFor the maximum value of the product weight range, the product weight range Gb-GsThe average is divided into n parts, the adjacent 2 parts are separated by J, J ═ Gb-Gs) N, i.e. Gb＝Gs+ nJ; j is one n times of weight range interval, n times of batch foam sweeping exploration tests are carried out, and the weight of the ith foam product is respectively positioned in [ Gs+(i-1)J]～(Gs+ iJ), i is 1, 2 … … n, when i is 1, 2 … …, n-1, n, the corresponding weight ranges are G respectivelys～(Gs+J)、(Gs+J)～(Gs+2J)、……、[Gs+(n-2)J]～[Gs+(n-1)J]、[Gs+(n-1)J]～Gb. The density of n foam products was measured and filled into the table. Calculating an average density value delta, wherein delta is sigma delta i/n, delta i is the density of the foam product in the ith weight range, i is 1 and 2 … … n, the absolute value of the difference between a certain density and the average density is less than 3-5%, and the average density delta is adopted.
| [Gs+(i-1)J]～(Gs+iJ) | Gs～(Gs+J) | (Gs+J)～(Gs+2J) | …… | [Gs+(n-2)J]～[Gs+(n-1)J] | [Gs+(n-1)J]～Gb |
| δi | δ1 | δ2 | …… | δn-1 | δn |
| δiValue, g/cm3 |
Step 1: performing flotation according to a flotation test scheme, and scraping a flotation foam product into a sample receiving device with volume scales; the sample receiver, namely a sample receiver, can be a beaker, a conical flask or a measuring cylinder with volume scales, the size of the sample receiver is determined according to the weight or the volume of the foam product, and if the sample receiver is small, a funnel can be added;
step 2: weighing the weight M1 of the sample receiver in advance;
and step 3: after the flotation is finished, reading the volume V of the ore pulp by the sample receiver; weighing the sample receiving weight M2 with the ore pulp, wherein the ore pulp weight M is as follows: M-M2-M1;
and 4, step 4: the weight m of solids in the foam product was calculated using the formula:
wherein m is the weight of solids in the foam product, g; delta is the density of the solids in the foam product, g/cm3I.e., g/ml; m foam product pulp weight, g; v, the volume of the foam product pulp is ml;
and 5: according to the range of the step 0 in which the weight m value of the solid in the foam product is positioned, recalculating the weight m of the solid in the foam product by using the corresponding delta i valuei
Step 6: according to the weight m of solids in the foamed productiThe test conditions were adjusted. And if the weight of the product is less than the preset value, continuing adding chemicals for flotation until the weight of the product reaches the preset value, and stopping flotation. After the flotation is finished, if foam remains in the flotation tank, the addition amount of the collecting agent or the foaming agent can be reduced as required in the next test.
Density delta of solid material in the same ore and foam productiOnly one measurement is needed, namely, the step 0 is not needed in the next test; if a certain density deltaiThe absolute value of the difference value of the density delta and the average density delta is less than 3-5%, and the step 5 is not needed.
Example 1:
when the copper ore dressing foam product is measured, the error is 4.5 percent compared with the actual weight.
Example 2:
the foam of a certain magnesite subjected to a flotation test is measured, and the error is 3.2 percent compared with the actual weight
Compared with the conventional method, the method has the advantages of high speed, immediate measurement, no change of the form and the property of the ore pulp, test efficiency improvement and effect improvement.
1) When the foam product is a final product of a test, compared with the traditional solid-liquid separation-drying-weighing method, the method is convenient and fast (the drying generally needs longer time). The instant and fast measurement is beneficial to flexibly controlling the flotation condition. If the amount is not enough, continuing to scrape bubbles, and supplementing the medicament if the foam is not enough; sufficient, i.e. stopping the flotation;
2) when the foam product is not the final product of the test, the method does not change the form and the property of the product, so that the quantity of the foam product is mastered, and the subsequent selection is not influenced; for closed-circuit test, the concentration tailings are products in the tank, but the raw ore and the concentrate in the concentration operation are foam products, the method can simply calculate the amount of the concentration tailings, so that the ore amount in each closed-circuit test is mastered, the control and adjustment of conditions in the test process are facilitated, and the balance of the closed-circuit test amount is realized;
3) if the scraper, the foam guide or the sample receiver wall is attached with foam product, the foam product can be washed, and the washing water does not influence the final result value of the invention.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
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