Rapid method for determining grade of target element in concentrate based on mineral dissociation degree

Abstract

The invention discloses a rapid method for determining the grade of target elements in concentrate based on mineral dissociation degree, and the grade of the target elements in the concentrate under a certain fineness condition is calculated according to the dissociation degree of target minerals in a raw ore sample under the certain fineness condition and the content of the target elements in the target minerals in the raw ore sample. By means of the method, the grade of the target element in the concentrate under the specified fineness condition can be calculated more quickly and more effectively, the beneficiation effect under the fineness condition can be predicted in advance when beneficiation operation is not conducted, and powerful data support is provided for formulation of the beneficiation technological process.

Description

Technical Field

[0001] The invention belongs to the technical field of mineralogy of ore dressing processes, and in particular relates to a rapid method for determining the grade of a target element in an ore concentrate based on the degree of mineral dissociation. Background Art

[0002] In the field of mineral processing technology, the grade of target elements in concentrates is of great significance. The higher the grade of target elements in concentrates, the more enriched the useful minerals, the lower the impurity content, the better the product quality, the higher the selling price, and the higher the profit brought to the enterprise. However, the existing technology has the following problems. The grade of target elements in concentrates usually requires a series of mineral processing operations to obtain specific concentrate products, and then the concentrate products are sampled and sent for analysis to finally obtain the grade of target elements in the concentrate. The data obtained by this method takes a long time and is also easily affected by the representativeness of the samples and the level of the analysis and testing personnel. Summary of the invention

[0003] In order to overcome the problems in the prior art, the present invention provides a rapid method for determining the grade of target elements in concentrate based on the mineral dissociation degree. The method does not require mineral processing operations, and the calculation method is rapid and accurate.

[0004] In order to solve the above technical problems, the technical solution proposed by the present invention is: The present invention provides a rapid method for determining the grade of a target element in an ore concentrate based on the mineral dissociation degree, comprising the following steps: S1. Grind the raw ore and select representative samples by reduction; S2. The representative sample selected in step S1 is made into a light sheet and then the dissociation degree of the target mineral to be beneficiated in the raw ore is determined. The calculation method of the target element grade in the concentrate at this fineness is as follows: The quality of the target element ; Among them, when n=0, B0 is the distribution rate of the monomer, and C0 is the constant of the monomer corresponding to B0; when n>0, B n is the distribution rate of conjoined bodies, C n For B n The constant corresponding to the intergrowth; D is the content of the target element in the target mineral that needs to be beneficiated in the original ore.

[0005] In the present invention, the calculation method in step S2 includes the following steps: the conjoined bodies are measured by the n-division method, and the monomer distribution rate is recorded as B0, The distribution rate of ≤ conjoined bodies <1 is recorded as B1, ≤Conjoined< The distribution rate of is denoted as B2, ≤Conjoined< The distribution rate of is denoted as B3, ≤Conjoined< The distribution rate is recorded as B4, ..., conjoined bodies < The distribution rate is denoted as B n , where B0+B1+B2+B3+B4+……+B n =100%.

[0006] S3. When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0007] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0008] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0009] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0010] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: Yield . ...... Recover all particles containing the target minerals. The calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0012] Where D is the content of the target element in the target mineral to be beneficiated in the original ore, C0 is the constant corresponding to the monomer, and C1 is ≤The constant corresponding to the conjoined body<1, C2 is ≤Conjoined< The corresponding constant, C3, is ≤Conjoined< The corresponding constant, C4, is ≤Conjoined< The corresponding constants, ..., C n For conjoined bodies The corresponding constant; where C0=1, , , , … .

[0013] As an optional embodiment, in the method provided by the present invention, n=4, and the monomer distribution rate is recorded as B0, the distribution rate of 3 / 4≤conjoined bodies<1 is recorded as B1, the distribution rate of 2 / 4≤conjoined bodies<3 / 4 is recorded as B2, the distribution rate of 1 / 4≤conjoined bodies<2 / 4 is recorded as B3, and the distribution rate of conjoined bodies<1 / 4 is recorded as B4.

[0014] As an optional embodiment, in the method provided by the present invention, n=4, the constant C0 corresponding to the monomer is 1, and the constant C0 corresponding to 3 / 4≤conjoined body<1 is , the constant corresponding to 2 / 4≤conjoined body<3 / 4 , the constant corresponding to 1 / 4≤conjoined body<2 / 4 , the constant corresponding to the conjoined body <1 / 4 .

[0015] As an optional embodiment, in the method provided by the present invention, n=4, When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0016] When recovering monomers and ≥3 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0017] When recovering monomers and ≥2 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0018] When recovering monomers and ≥1 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0019] Recover all particles containing target minerals. The calculation method for the target element grade in the concentrate at this fineness is: Yield .

[0020] As an optional embodiment, in the method provided by the present invention, n=5, the obtained monomer distribution rate is recorded as B0, the distribution rate of 4 / 5≤conjoined bodies<1 is recorded as B1, the distribution rate of 3 / 5≤conjoined bodies<4 / 5 is recorded as B2, the distribution rate of 2 / 5≤conjoined bodies<3 / 5 is recorded as B3, and the distribution rate of 1 / 5≤conjoined bodies<2 / 5 is recorded as B 4， The distribution rate of conjoined bodies <1 / 5 was recorded as B5.

[0021] As an optional embodiment, in the method provided by the present invention, n=5, the constant C0 corresponding to the monomer is 1, and the constant corresponding to 4 / 5≤conjoined body<1 is , the constant corresponding to 3 / 5≤conjoined bodies<4 / 5 , the constant corresponding to 2 / 5≤conjoined bodies<3 / 5 , the constant corresponding to 2 / 5≤conjoined bodies<3 / 5 , the constant corresponding to conjoined bodies <1 / 5 .

[0022] As an optional embodiment, in the method provided by the present invention, n=5, When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0023] When recovering monomers and ≥4 / 5 intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0024] When recovering monomers and ≥3 / 5 intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0025] When recovering monomers and ≥2 / 5 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0026] When recovering monomers and ≥1 / 5 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: Yield .

[0027] Recover all particles containing the target minerals. The calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0028] As an optional implementation, in the method provided by the present invention, in step S1, the raw ore is ground to a certain fineness and then a representative sample is selected by quartering.

[0029] As an optional embodiment, in the method provided by the present invention, in step S2, the dissociation degree of the target mineral is obtained by microscopic identification and process mineralogy parameter testing system.

[0030] Compared with the prior art, the present invention has the following beneficial effects: According to the dissociation degree of the target mineral in the original ore under the specified fineness conditions and the content of the target element in the target mineral, the grade of the target element in the concentrate of the specified fineness can be calculated in advance before the mineral processing operation is carried out, providing a scientific basis for formulating a reasonable mineral processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 The present invention provides a technical roadmap for the rapid method for determining the grade of target elements in concentrate. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively and meticulously below in conjunction with the accompanying drawings and preferred embodiments of the present invention, but the protection scope of the present invention is not limited to the following specific embodiments.

[0034] Unless otherwise defined, all professional terms used below have the same meanings as those generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of the present invention.

[0035] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0036] A rapid method for determining the grade of target elements in concentrate based on mineral dissociation degree, the technical route is as follows Figure 1 As shown, the following steps are included: After the raw ore is ground to a certain fineness, representative samples are selected through quartering.

[0037] The above samples are made into optical slices for determining the degree of dissociation of the target mineral, which is obtained by combining microscope identification and MLA (Process Mineralogy Parameter Test System) measurement.

[0038] S1. Grind the raw ore into fine powder and select representative samples through reduction.

[0039] S2. The representative sample selected in step S1 is made into a light sheet and then the dissociation degree of the target mineral to be beneficiated in the raw ore is determined. The calculation method of the target element grade in the concentrate at this fineness is as follows: The quality of the target element ; Among them, when n=0, B0 is the distribution rate of the monomer, and C0 is the constant of the monomer corresponding to B0; when n>0, B n is the distribution rate of conjoined bodies, C n For B n The corresponding intergrowth constant; D is the content of the target element in the target mineral that needs to be beneficiated in the original ore.

[0040] The specific steps are as follows: the conjoined bodies are measured by the n-division method, and the monomer distribution rate is recorded as B0. The distribution rate of ≤ conjoined bodies <1 is recorded as B1, ≤Conjoined< The distribution rate of is denoted as B2, ≤Conjoined< The distribution rate of is denoted as B3, ≤Conjoined< The distribution rate is recorded as B4, ..., conjoined bodies < The distribution rate is denoted as B n , where B0+B1+B2+B3+B4+……+B n =100%.

[0041] When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0042] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0043] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0044] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: The quality of the target element .

[0045] Recycled monomers and ≥ When the conjoined bodies are of different sizes, the calculation method of the target element grade in the concentrate at this fineness is: Yield . ...... Recover all particles containing the target minerals. The calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

[0047] Where D is the content of the target element in the target mineral to be beneficiated in the original ore, C0 is the constant corresponding to the monomer, and C1 is ≤The constant corresponding to the conjoined body<1, C2 is ≤Conjoined< The corresponding constant, C3, is ≤Conjoined< The corresponding constant, C2, is ≤Conjoined< The corresponding constants, ..., C n For conjoined bodies The corresponding constant; where C0=1, , , , … .

[0048] Example 1 To ensure that the calculation method of this indicator is correct and feasible, the following examples are given: the CaF2 content D in the fluorite of the CH fluorite mine in Mongolia is 100%, the grinding fineness is -200 mesh 75%, and the intergrowths are determined by the n=4 method. The monomer distribution rate B0=73.72%, the distribution rate of 3 / 4≤intergrowths<1 is B1=15.33%, the distribution rate of 2 / 4≤intergrowths<3 / 4 is B2=6.48%, the distribution rate of 1 / 4≤intergrowths<2 / 4 is B3=2.96%, and the distribution rate of intergrowths<1 / 4 is B4=1.51%.

[0049] A quick method to obtain the CaF2 grade in the concentrate by recovering only the monomer: CaF2 Grade .

[0050] A rapid method for recovering monomers and ≥3 / 4 of conjoined bodies to obtain the CaF2 grade in concentrate: CaF2 Grade .

[0051] A rapid method for recovering monomers and ≥1 / 2 of conjoined bodies to obtain the CaF2 grade in concentrates: CaF2 Grade .

[0052] A rapid method for recovering monomers and ≥1 / 4 of conjoined bodies to obtain the CaF2 grade in concentrates: CaF2 Grade .

[0053] A fast method to recover all fluorite-containing particles and obtain the CaF2 grade in the concentrate: CaF2 Grade .

[0054] The CH fluorite mine in Mongolia was subjected to a one-rough and three-fine flotation operation at a fineness of -200 mesh and 75%, and the final fluorite concentrate CaF2 grade was 97.11%, which is very close to the CaF2 grade in the concentrate obtained by recovering monomers and ≥3 / 4 of conjoined bodies: CaF2 grade 97.60%.

[0055] Example 2 The CaF2 content in the fluorite from NU fluorite mine in Mongolia is D=100%, the grinding fineness is -200 mesh 75%, the intergrowths are determined by the n=5 method, the monomer distribution rate B0=94.32%, the distribution rate of intergrowths of 4 / 5≤<1 is B1=3.71%, the distribution rate of intergrowths of 3 / 5≤<4 / 5 is B2=1.11%, the distribution rate of intergrowths of 2 / 5≤<3 / 5 is B3=0.46%, the distribution rate of intergrowths of 1 / 5≤<2 / 5 is B4=0.31%, and the distribution rate of intergrowths of 1 / 5≤<1 / 5 is B5=0.09%.

[0056] A quick method to obtain the CaF2 grade in the concentrate by recovering only the monomer: CaF2 Grade .

[0057] A rapid method for recovering monomers and ≥4 / 5 conjoined bodies to obtain CaF2 grade in concentrate: CaF2 Grade .

[0058] A rapid method for recovering monomers and ≥3 / 5 of conjoined bodies to obtain CaF2 grade in concentrate: CaF2 Grade .

[0059] A rapid method for recovering monomers and ≥2 / 5 of conjoined bodies to obtain CaF2 grade in concentrate: CaF2 Grade .

[0060] A rapid method for recovering monomers and ≥1 / 5 of conjoined bodies to obtain the CaF2 grade in concentrate: CaF2 Grade

[0061] A fast method to recover all fluorite-containing particles and obtain the CaF2 grade in the concentrate: CaF2 Grade

[0062] The NU fluorite mine in Mongolia was subjected to a one-rough and three-fine flotation operation under the conditions of -200 mesh and 75% fineness, and the final fluorite concentrate CaF2 grade was 97.02%, which is very close to the CaF2 grade in the concentrate obtained by recovering all fluorite-containing particles: CaF2 grade 97.20%.

[0063] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A rapid method for determining the grade of target elements in concentrate based on mineral dissociation degree, characterized in that: The following steps are involved: S1. Grind the raw ore and select representative samples by reduction; S2. The representative sample selected in step S1 is made into a light sheet and then the dissociation degree of the target mineral to be beneficiated in the raw ore is determined. The calculation method of the target element grade in the concentrate at this fineness is as follows: The quality of the target element ; Among them, when n=0, B0 is the distribution rate of the monomer, and C0 is the constant of the monomer corresponding to B0; when n>0, B n is the distribution rate of conjoined bodies, C n For B n The constant corresponding to the intergrowth; D is the content of the target element in the target mineral that needs to be beneficiated in the original ore.

2. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1 is characterized in that: When n=4, the monomer distribution rate is recorded as B0, the distribution rate of 3 / 4≤conjoined bodies<1 is recorded as B1, the distribution rate of 2 / 4≤conjoined bodies<3 / 4 is recorded as B2, the distribution rate of 1 / 4≤conjoined bodies<2 / 4 is recorded as B3, and the distribution rate of conjoined bodies<1 / 4 is recorded as B4.

3. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1 is characterized in that: n=4, the constant corresponding to the monomer C0=1, the constant corresponding to 3 / 4≤conjoined<1 , the constant corresponding to 2 / 4≤conjoined body<3 / 4 , the constant corresponding to 1 / 4≤conjoined body<2 / 4 , the constant corresponding to the conjoined body <1 / 4 .

4. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to any one of claims 1 to 3, characterized in that: n=4， When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥3 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥2 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥1 / 4 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; Recover all particles containing target minerals. The calculation method for the target element grade in the concentrate at this fineness is: Yield .

5. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1, characterized in that: n=5, the distribution rate of monomers is recorded as B0, the distribution rate of 4 / 5≤conjoined bodies<1 is recorded as B1, the distribution rate of 3 / 5≤conjoined bodies<4 / 5 is recorded as B2, the distribution rate of 2 / 5≤conjoined bodies<3 / 5 is recorded as B3, and the distribution rate of 1 / 5≤conjoined bodies<2 / 5 is recorded as B4. , The distribution rate of conjoined bodies <1 / 5 was recorded as B5.

6. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1, characterized in that: n=5, the constant corresponding to the monomer C0=1, the constant corresponding to 4 / 5≤conjoined<1 , the constant corresponding to 3 / 5≤conjoined bodies<4 / 5 , the constant corresponding to 2 / 5≤conjoined bodies<3 / 5 , the constant corresponding to 2 / 5≤conjoined bodies<3 / 5 , the constant corresponding to conjoined bodies <1 / 5 .

7. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1, 5 or 6, characterized in that: n=5， When only monomers are recovered, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥4 / 5 intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥3 / 5 intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥2 / 5 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element ; When recovering monomers and ≥1 / 5 of intergrown bodies, the calculation method for the target element grade in the concentrate at this fineness is: Yield ; Recover all particles containing the target minerals. The calculation method for the target element grade in the concentrate at this fineness is: The quality of the target element .

8. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1, characterized in that: In step S1, the raw ore is ground to a certain fineness and then a representative sample is selected by quartering.

9. The rapid method for determining the grade of target element in concentrate based on mineral dissociation degree according to claim 1, characterized in that: In step S2, the dissociation degree of the target mineral is determined by microscope identification and process mineralogy parameter testing system.

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