Method for determining concentrate yield and target element recovery rate based on mineral granularity and dissociation degree

Abstract

The invention discloses a method for determining concentrate yield and target element recovery rate based on mineral granularity and dissociation degree, which comprises the following steps: according to the granularity and dissociation degree of target mineral in a raw ore sample under a certain fineness condition, combining the grade of the target element in the raw ore sample, the weight content of the target mineral and the content of the target element in the target mineral; and calculating the concentrate yield and the recovery rate of the target element under the fineness condition. According to the method for determining the concentrate yield and the recovery rate of the target element, the utilization rate of raw ore resources under the fineness condition can be predicted in advance when mineral separation operation is not carried out, and a powerful scientific basis is provided for formulating the mineral separation technological process.

Description

Technical Field

[0001] The present invention belongs to the technical field of beneficiation process mineralogy, and particularly relates to a method for determining the concentrate yield and the recovery rate of target elements based on mineral particle size and degree of dissociation. Background Art

[0002] In the field of mineral processing technology, the concentrate yield and the recovery rate of target elements are of great significance. Under the same conditions of raw ore, the higher the concentrate yield, the greater the proportion of raw ore converted into products, the higher the utilization rate, the less waste, the smaller the amount of waste to be treated, the higher the profit, and the lower the cost. The higher the recovery rate of target elements in the concentrate, the more fully the useful minerals are utilized, the more resources are converted into valuable concentrate products, the less waste of useful resources in the tailings and other links, and the more the value of resources can be exerted. There are the following problems in the calculation of concentrate yield and recovery rate in the prior art.

[0003] The concentrate yield and recovery rate usually need to obtain specific concentrate products through a series of beneficiation operations, and then through sampling, analysis, and balance calculation with raw ore - middlings - tailings, etc., the specific values of the concentrate yield and the recovery rate of target elements can be finally obtained. The data obtained through experimental methods takes a long time, and the results vary due to different beneficiation processes and conditions. Summary of the Invention

[0004] In order to overcome the problems in the prior art, the present invention provides a method for determining the concentrate yield and the recovery rate of target elements based on mineral particle size and degree of dissociation. This method does not require beneficiation operations, and the calculation method is fast and accurate.

[0005] In order to solve the above technical problems, the technical solution proposed by the present invention is as follows: The present invention provides a method for determining the concentrate yield based on mineral particle size and degree of dissociation, including the following steps: S1. After grinding the raw ore, select a representative sample by quartering; S2. After making the representative sample selected in step S1 into a polished section, measure the particle size of the target minerals to be beneficiated in the raw ore, and obtain the proportion of target minerals above 800 mesh in the sample, denoted as A; measure the weight content of the target minerals in the raw ore, denoted as W; S3. After making the representative sample selected in step S1 into a polished section, detect the degree of dissociation of the target minerals in the sample. The associated minerals are measured by the n - fraction method. The calculation methods for the concentrate yield and the recovery rate of target elements at this fineness are as follows: Yield ; where when n = 0, B 0 is the distribution rate of monomers, C 0 is the constant corresponding to B 0 ; when n > 0, Bn is the distribution rate of the coalesced body, C n is a constant corresponding to the coalesced body of B n In the present invention, the calculation method in step S3 includes the following steps: The monomer distribution rate is denoted as B

[0006] The distribution rate of the coalesced body where 0 ≤ coalesced body < 1 is denoted as B 0 , The distribution rate of the coalesced body where 1 ≤ coalesced body < 2 is denoted as B 1 , The distribution rate of the coalesced body where 2 ≤ coalesced body < is denoted as B 2 , The distribution rate of the coalesced body where 3 ≤ coalesced body < is denoted as B 3 , The distribution rate of the coalesced body where 4 ≤ coalesced body < is denoted as B 4 , ……, the distribution rate of the coalesced body where the coalesced body < is denoted as B n , where B 0 + B 1 + B 2 + B 3 + B 4 + …… + B n = 100%.

[0007] When only the monomers are recovered, the calculation method of the concentrate yield at this fineness is: Yield ; When the monomers and the coalesced bodies ≥ are recovered, the calculation method of the concentrate yield at this fineness is: Yield ; When the monomers and the coalesced bodies ≥ are recovered, the calculation method of the concentrate yield at this fineness is: Yield ; When the monomers and the coalesced bodies ≥ are recovered, the calculation method of the concentrate yield at this fineness is: Yield ; When the monomers and the coalesced bodies ≥ are recovered, the calculation method of the concentrate yield at this fineness is: Yield ; And so on... When all the particles containing the target mineral are recovered, the calculation method of the concentrate yield at this fineness is: Yield .

[0008] Among them, C0 is the constant corresponding to the monomer, C 1 is ≤ the constant corresponding to the <1 associated mineral aggregate, C 2 is ≤ the < associated mineral aggregate corresponding constant, C 3 is ≤ the < associated mineral aggregate corresponding constant, C 2 is ≤ the < associated mineral aggregate corresponding constant, ……, C n is the constant corresponding to the < associated mineral aggregate ; where C 0 = 1, , , , …… .

[0009] As an alternative embodiment, in the method for determining concentrate yield provided by the present invention, n = 4, and the monomer distribution rate is denoted as B 0 , the distribution rate of 3 / 4 ≤ the <1 associated mineral aggregate is denoted as B 1 , the distribution rate of 2 / 4 ≤ the <3 / 4 associated mineral aggregate is denoted as B 2 , the distribution rate of 1 / 4 ≤ the <2 / 4 associated mineral aggregate is denoted as B 3 , the distribution rate of the <1 / 4 associated mineral aggregate is denoted as B 4 .

[0010] As an alternative embodiment, in the method for determining concentrate yield provided by the present invention, n = 4, the constant C corresponding to the monomer 0 = 1, the constant corresponding to 3 / 4 ≤ the <1 associated mineral aggregate , the constant corresponding to 2 / 4 ≤ the <3 / 4 associated mineral aggregate , the constant corresponding to 1 / 4 ≤ the <2 / 4 associated mineral aggregate , the constant corresponding to the <1 / 4 associated mineral aggregate .

[0011] As an alternative embodiment, in the method for determining concentrate yield provided by the present invention, n = 4, when only monomers are recovered, the calculation method for the concentrate yield at this fineness is: Yield ; when monomers and ≥3 / 4 associated mineral aggregates are recovered, the calculation method for the concentrate yield at this fineness is: Yield ; when monomers and ≥2 / 4 associated mineral aggregates are recovered, the calculation method for the concentrate yield at this fineness is: Yield ; When recovering the monomer and ≥1 / 4 of the intergrown bodies, the calculation method of the concentrate yield at this fineness is: Yield ; When recovering all the particles containing the target mineral, the calculation method of the concentrate yield at this fineness is: Yield .

[0012] As an alternative embodiment, in the method for determining the concentrate yield provided by the present invention, n = 5, and the monomer distribution rate is denoted as B 0 , the distribution rate of 4 / 5 ≤ intergrown body < 1 is denoted as B 1 , the distribution rate of 3 / 5 ≤ intergrown body < 4 / 5 is denoted as B 2 , the distribution rate of 2 / 5 ≤ intergrown body < 3 / 5 is denoted as B 3 , the distribution rate of 2 / 5 ≤ intergrown body < 3 / 5 is denoted as B 4 , the distribution rate of intergrown body < 1 / 5 is denoted as B 5 .

[0013] As an alternative embodiment, in the method for determining the concentrate yield provided by the present invention, n = 5, and the constant C corresponding to the monomer 0 = 1, the constant corresponding to 4 / 5 ≤ intergrown body < 1 , the constant corresponding to 3 / 5 ≤ intergrown body < 4 / 5 , the constant corresponding to 2 / 5 ≤ intergrown body < 3 / 5 , the constant corresponding to 2 / 5 ≤ intergrown body < 3 / 5 , the constant corresponding to intergrown body < 1 / 5 .

[0014] As an alternative embodiment, in the method for determining the concentrate yield provided by the present invention, n = 5, When only recovering the monomer, the calculation method of the concentrate yield at this fineness is: Yield ; When recovering the monomer and ≥4 / 5 of the intergrown bodies, the calculation method of the concentrate yield at this fineness is: Yield ; When recovering the monomer and ≥3 / 5 of the intergrown bodies, the calculation method of the concentrate yield at this fineness is: Yield ; When recovering the monomer and ≥2 / 5 of the intergrown bodies, the calculation method of the concentrate yield at this fineness is: Yield ; When recovering monomers and ≥1 / 5 of the locked particles, the calculation method of the concentrate yield at this fineness is as follows: Yield ; When recovering all particles containing the target mineral, the calculation method of the concentrate yield at this fineness is as follows: Yield .

[0015] Based on the same technical concept, the present invention also provides a method for determining the recovery rate of target elements based on mineral particle size and degree of dissociation, including the following steps: S1. After grinding the raw ore, select a representative sample by quartering; S2. After making a polished section from the representative sample selected in step S1, measure the particle size of the target mineral to be beneficiated in the raw ore, obtain the proportion of the target mineral above 800 mesh in the sample, denoted as A; the grade of the target element in the raw ore, denoted as α; measure the weight content of the target mineral in the raw ore, denoted as W; S3. After making a polished section from the representative sample selected in step S1, detect the degree of dissociation of the target mineral in the sample, and measure the locked particles by the n-division method. The calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; Among them, when n = 0, B 0 is the distribution rate of monomers, and C 0 is the constant corresponding to B 0 ; when n > 0, B n is the distribution rate of locked particles, and C n is the constant corresponding to B n .

[0016] In the present invention, the calculation method in step S3 includes the following steps: the distribution rate of monomers is denoted as B 0 , ≤ locked particles < 1, the distribution rate is denoted as B 1 , ≤ locked particles < , the distribution rate is denoted as B 2 , ≤ locked particles < , the distribution rate is denoted as B 3 , ≤ locked particles < , the distribution rate is denoted as B 4 , ……, locked particles < , the distribution rate is denoted as B n , where B 0 + B 1 + B 2 + B 3 + B 4 + …… + Bn = 100%.

[0017] When only monomers are recovered, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; When recovering monomers and ≥ of the associated minerals, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; When recovering monomers and ≥ of the associated minerals, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; When recovering monomers and ≥ of the associated minerals, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; When recovering monomers and ≥ of the associated minerals, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element ; And so on... When recovering all particles containing the target mineral, the calculation method of the recovery rate of the target element at this fineness is as follows: Recovery rate of the target element .

[0018] Among them, C 0 is the constant corresponding to monomers, C 1 is ≤ associated mineral < 1 corresponding constant, C 2 is ≤ associated mineral < corresponding constant, C 3 is ≤ associated mineral < corresponding constant, C 2 is ≤ associated mineral < corresponding constant,..., C n is the constant corresponding to associated mineral < corresponding; among them C 0 = 1, , , , ... .

[0019] As an alternative implementation, in the method for determining the recovery rate of the target element provided by the present invention, n = 4, and the monomer distribution rate is denoted as B 0 , the distribution rate of the associated minerals where 3 / 4 ≤ associated minerals < 1 is denoted as B 1 , the distribution rate of the associated minerals where 2 / 4 ≤ associated minerals < 3 / 4 is denoted as B 2 , the distribution rate of the associated minerals where 1 / 4 ≤ associated minerals < 2 / 4 is denoted as B 3 , the distribution rate of the associated minerals where associated minerals < 1 / 4 is denoted as B 4 .

[0020] As an alternative implementation, in the method for determining the recovery rate of the target element provided by the present invention, n = 4, and the constant C corresponding to the monomer 0 = 1, the constant corresponding to the associated minerals where 3 / 4 ≤ associated minerals < 1 , the constant corresponding to the associated minerals where 2 / 4 ≤ associated minerals < 3 / 4 , the constant corresponding to the associated minerals where 1 / 4 ≤ associated minerals < 2 / 4 , the constant corresponding to the associated minerals where associated minerals < 1 / 4 .

[0021] As an alternative implementation, in the method for determining the recovery rate of the target element provided by the present invention, n = 4, when only the monomers are recovered, the recovery rate of the target element at this fineness ; When the monomers and the associated minerals with ≥ 3 / 4 are recovered, the recovery rate of the target element at this fineness is: ; When the monomers and the associated minerals with ≥ 2 / 4 are recovered, the recovery rate of the target element at this fineness is: ; When the monomers and the associated minerals with ≥ 1 / 4 are recovered, the recovery rate of the target element at this fineness is: ; When all the particles containing the target minerals are recovered, the recovery rate of the target element at this fineness is: .

[0022] As an alternative implementation, in the method for determining the recovery rate of the target element provided by the present invention, n = 5, and the monomer distribution rate is denoted as B 0 , the distribution rate of the associated minerals where 4 / 5 ≤ associated minerals < 1 is denoted as B 1 , the distribution rate of the associated minerals where 3 / 5 ≤ associated minerals < 4 / 5 is denoted as B 2 , the distribution rate of the associated minerals where 2 / 5 ≤ associated minerals < 3 / 5 is denoted as B 3 , the distribution rate of the associated minerals where 1 / 5 ≤ associated minerals < 2 / 5 is denoted as B 4 , the distribution rate of the associated minerals where associated minerals < 1 / 5 is denoted as B 5 .

[0023] As an alternative embodiment, in the method for determining the recovery rate of target elements provided by the present invention, n = 5, and the constant C corresponding to the monomer 0 = 1, and the constant corresponding to the inclusion < 1 is 4 / 5 ≤ inclusion < 1 , and the constant corresponding to the inclusion < 4 / 5 is 3 / 5 ≤ inclusion < 4 / 5 , and the constant corresponding to the inclusion < 3 / 5 is 2 / 5 ≤ inclusion < 3 / 5 , and the constant corresponding to the inclusion < 2 / 5 is 1 / 5 ≤ inclusion < 2 / 5 , and the constant corresponding to the inclusion < 1 / 5 .

[0024] As an alternative embodiment, in the method for determining the recovery rate of target elements provided by the present invention, n = 5. When only the monomer is recovered, the recovery rate of the target element at this fineness ; When the monomer and inclusions ≥ 4 / 5 are recovered, the recovery rate of the target element at this fineness is: ; When the monomer and inclusions ≥ 3 / 5 are recovered, the recovery rate of the target element at this fineness is: ; When the monomer and inclusions ≥ 2 / 5 are recovered, the recovery rate of the target element at this fineness is: ; When the monomer and inclusions ≥ 2 / 5 are recovered, the recovery rate of the target element at this fineness is: ; When all particles containing the target mineral are recovered, the recovery rate of the target element at this fineness is: .

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention can, based on the weight content, particle size, and dissociation degree of the target mineral in the raw ore under a certain fineness condition, calculate in advance the concentrate yield and the recovery rate of the target element under this fineness condition before the beneficiation operation, providing a scientific basis for formulating a reasonable beneficiation process flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is the technical flow chart of the method for determining the concentrate yield in the present invention; Figure 2 It is the technical flow chart of the method for determining the recovery rate of target elements in the present invention. Specific embodiments

[0028] For the convenience of understanding the present invention, the following will describe the present invention more comprehensively and meticulously in conjunction with the accompanying drawings of the specification and preferred embodiments, but the protection scope of the present invention is not limited to the following specific embodiments.

[0029] Unless otherwise defined, all professional terms used hereinafter have the same meaning as commonly 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 protection scope of the present invention.

[0030] Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment, etc. used in the present invention can be obtained through market purchase or can be prepared by existing methods.

[0031] A method for determining the concentrate yield and the recovery rate of target elements based on mineral particle size and degree of dissociation, the technical flow chart is as Figure 1 、 Figure 2 shown, and the specific steps are as follows: S1. After grinding the raw ore, select a representative sample through quartering; S2. After making the representative sample selected in step S1 into a polished section, measure the particle size of the target minerals to be beneficiated in the raw ore, obtain the proportion of target minerals above 800 mesh in the sample, denoted as A; the grade of the target element in the raw ore, denoted as α; measure the weight content of the target minerals in the raw ore, denoted as W; S3. After making the representative sample selected in step S1 into a polished section, detect the degree of dissociation of the target minerals in the sample. The associated minerals are measured by the n - fraction method. The calculation methods of the concentrate yield and the recovery rate of the target element at this fineness are as follows: Yield ; Recovery rate of target element ; Among them, when n = 0, B 0 is the distribution rate of monomers, C 0 is the constant corresponding to B 0 ; when n > 0, B n is the distribution rate of associated minerals, C n is the constant corresponding to B n corresponding associated minerals.

[0032] The specific technical flow is as Figure 1 、 Figure 2As shown in the figure, the original ore is ground to a certain fineness and then representative samples are selected by quartering.

[0033] The above samples are made into polished sections for determining the particle size and liberation degree of the target minerals. The particle size and liberation degree are obtained by combining microscopic identification and MLA measurement.

[0034] The proportion of target minerals above 800 mesh in the sample is A. The weight content of the target minerals in the original ore is measured and recorded as W.

[0035] After making the representative samples selected in step S1 into polished sections, the liberation degree of the target minerals in the samples is detected. The associated minerals are measured by the n-point method, and the monomer distribution rate is recorded as B 0 , The distribution rate of ≤ associated minerals < 1 is recorded as B 1 , ≤ associated minerals < The distribution rate of is recorded as B 2 , ≤ associated minerals < The distribution rate of is recorded as B 3 , ≤ associated minerals < The distribution rate of is recorded as B 4 …… associated minerals < The distribution rate of is recorded as B n , where B 0 +B 1 +B 2 +B 3 +B 4 +……+B n =100%.

[0036] When only monomers are recovered, the calculation methods for the concentrate yield and the recovery rate of the target element at this fineness are as follows: Yield ; Recovery rate of the target element .

[0037] When recovering monomers and ≥ associated minerals, the calculation method for the concentrate yield at this fineness is as follows: Yield ; Recovery rate of the target element .

[0038] When recovering monomers and ≥ associated minerals, the calculation method for the concentrate yield at this fineness is as follows: Yield ; Recovery rate of the target element .

[0039] When recovering monomers and inclusions with a size of ≥ , the calculation method of the concentrate yield at this fineness is as follows: Yield ; Recovery rate of the target element .

[0040] When recovering monomers and inclusions with a size of ≥ , the calculation method of the concentrate yield at this fineness is as follows: Yield ; Recovery rate of the target element .

[0041] …… When recovering all particles containing the target mineral, the calculation method of the concentrate yield at this fineness is as follows: Yield ; Recovery rate of the target element .

[0042] Among them, C 0 is the constant corresponding to the monomer, C 1 is ≤ inclusion < 1 corresponding constant, C 2 is ≤ inclusion < corresponding constant, C 3 is ≤ inclusion < corresponding constant, C 2 is ≤ inclusion < corresponding constant, ……, C n is the constant corresponding to inclusion < ; among them, C 0 = 1, , , , …… .

[0043] Example 1 To ensure the correctness and feasibility of this index calculation method, the following examples are given: In the CH fluorite ore in Mongolia, the weight content of fluorite W = 46.73%, the content of CaF 2 in fluorite D = 100%, the grinding fineness is 75% - 200 mesh, the proportion of fluorite with +800 mesh A = 88.67%, the inclusions are measured by the n = 4 classification method, the monomer distribution rate B 0 = 73.72%, the distribution rate B 1 of 3 / 4 ≤ inclusion < 1 is 15.33%, the distribution rate B 2=6.48%, the distribution rate B of 1 / 4 ≤ intergrowth < 2 / 4 3 =2.96%, the intergrowth distribution rate B < 1 / 4 4 =1.51%.

[0044] (1)Calculation of concentrate yield A quick method to obtain the concentrate yield by only recovering monomers: Yield .

[0045] A quick method to obtain the concentrate yield by recovering monomers and ≥ 3 / 4 intergrowths: Yield .

[0046] A quick method to obtain the concentrate yield by recovering monomers and ≥ 1 / 2 intergrowths: Yield .

[0047] A quick method to obtain the concentrate yield by recovering monomers and ≥ 1 / 4 intergrowths: Yield .

[0048] A quick method to obtain the concentrate yield by recovering all fluorite-containing particles: Yield .

[0049] The fluorite concentrate obtained from the CH fluorite ore in Mongolia through one roughing and three cleaning flotation operations under the condition of -200 mesh 75% fineness, when the CaF 2 grade is 97.11%, the corresponding fluorite concentrate yield is 37.23%. It is extremely close to the concentrate index obtained by recovering monomers and ≥ 3 / 4 intergrowths: at this time, the concentrate yield is 37.81%, and the CaF 2 grade is 97.60%.

[0050] (2)Calculation of CaF 2 recovery rate A quick method to obtain the CaF 2 recovery rate by only recovering monomers: CaF 2 Recovery rate .

[0051] A quick method to obtain the CaF 2 recovery rate by recovering monomers and ≥ 3 / 4 intergrowths: CaF 2 Recovery rate .

[0052] A quick method to obtain the CaF 2 recovery rate by recovering monomers and ≥ 1 / 2 intergrowths: CaF 2 Recovery rate 。

[0053] Recover the monomer and ≥1 / 4 of the intergrown bodies to obtain CaF 2 A rapid method for the recovery rate: CaF 2 Recovery rate 。

[0054] Recover all fluorite-containing particles to obtain CaF 2 A rapid method for the recovery rate: CaF 2 Recovery rate 。

[0055] The CH fluorite ore in Mongolia undergoes one roughing and three cleaning flotation operations under the condition of -200 mesh and 75% fineness, obtaining the actual indexes of the final fluorite concentrate: when the CaF 2 grade is 97.11%, CaF 2 recovery rate is 77.37%, which is extremely close to the concentrate indexes obtained by recovering the monomer and ≥3 / 4 of the intergrown bodies: CaF 2 grade 97.60%, CaF 2 recovery rate 78.96%.

[0056] Example 2 The weight content W of fluorite in the NU fluorite ore in Mongolia is 81.89%, the CaF 2 content D in fluorite is 100%, the grinding fineness is -200 mesh and 75%, the proportion A of +800 mesh fluorite is 94.01%, the intergrown bodies are determined by the n = 5 classification method, and the monomer distribution rate B 0 = 94.32%, 4 / 5 ≤ intergrown body < 1 distribution rate B 1 = 3.71%, 3 / 5 ≤ intergrown body < 4 / 5 distribution rate B 2 = 1.11%, 2 / 5 ≤ intergrown body < 3 / 5 distribution rate B 3 = 0.46%, 1 / 5 ≤ intergrown body < 2 / 5 distribution rate B 4 = 0.31%, intergrown body < 1 / 5 distribution rate B 5 = 0.09%.

[0057] (1) Calculation of concentrate yield A rapid method for obtaining the concentrate yield by only recovering monomers: Yield 。

[0058] A rapid method for obtaining the concentrate yield by recovering monomers and ≥4 / 5 of the intergrown bodies: Yield 。

[0059] A rapid method for recovering monomers and ≥3 / 5 of the locked particles to obtain concentrate yield: Yield 。

[0060] A rapid method for recovering monomers and ≥2 / 5 of the locked particles to obtain concentrate yield: Yield 。

[0061] A rapid method for recovering monomers and ≥1 / 5 of the locked particles to obtain concentrate yield: Yield 。

[0062] A rapid method for recovering all fluorite-containing particles to obtain concentrate yield: Yield 。

[0063] The fluorite concentrate obtained from the NU fluorite ore in Mongolia through one roughing and three cleaning flotation operations under the condition of -200 mesh and 75% fineness, when the CaF 2 grade is 97.02%, the corresponding fluorite concentrate yield is 76.91%. It is extremely close to the concentrate index obtained by recovering all fluorite-containing particles: at this time, the concentrate yield is 79.20% and the CaF 2 grade is 97.20%.

[0064] (2)Calculation of CaF 2 Recovery rate A rapid method for recovering only monomers to obtain CaF 2 recovery rate: CaF 2 Recovery rate 。

[0065] A rapid method for recovering monomers and ≥4 / 5 of the locked particles to obtain CaF 2 recovery rate: CaF 2 Recovery rate 。

[0066] A rapid method for recovering monomers and ≥3 / 5 of the locked particles to obtain CaF 2 recovery rate: CaF 2 Recovery rate 。

[0067] A rapid method for recovering monomers and ≥2 / 5 of the locked particles to obtain CaF 2 recovery rate: CaF 2 Recovery rate 。

[0068] Recover monomers and ≥1 / 5 of the locked particles to obtain CaF 2 A rapid method for the recovery rate: CaF 2 Recovery rate 。

[0069] Recover all fluorite-containing particles to obtain CaF 2 A rapid method for the recovery rate: CaF 2 Recovery rate 。

[0070] The NU fluorite ore in Mongolia undergoes one roughing and three cleaning flotation operations under the condition of -200 mesh and 75% fineness to obtain the actual indexes of the final fluorite concentrate: when the CaF 2 grade is 97.02%, CaF 2 the recovery rate is 91.12%, which is relatively close to the concentrate indexes obtained by recovering all fluorite-containing particles: CaF 2 grade 97.20%, CaF 2 recovery rate 94.01%.

[0071] The above content is a further detailed description 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 those of ordinary skill in the art to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A method for determining concentrate yield based on mineral particle size and dissociation degree, characterized in that: The following steps are involved: S1. Grind the raw ore and select representative samples by reduction; S2, after making a light sheet of the representative sample selected in step S1, the particle size of the target mineral to be beneficiated in the original ore is determined, and the proportion of the target mineral above 800 mesh in the sample is obtained, which is recorded as A; and the weight content of the target mineral in the original ore is determined, which is recorded as W; S3. The representative sample selected in step S1 is made into a light sheet and then the dissociation degree of the target mineral in the sample is detected. The conjoined bodies are determined by the n-point method. The calculation method of the concentrate yield under this fineness is as follows: Yield ; 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 conjoined body.

2. The method for determining concentrate yield based on mineral particle size and dissociation degree according to claim 1, 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 method for determining concentrate yield based on mineral particle size and dissociation degree according to claim 1, 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 method for determining concentrate yield based on mineral particle size and 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 concentrate yield at this fineness is: Yield ; When recovering monomers and ≥3 / 4 of intergrown bodies, the calculation method for the concentrate yield at this fineness is: Yield ; When recovering monomers and ≥2 / 4 of intergrown bodies, the calculation method for the concentrate yield at this fineness is: Yield ; When recovering monomers and ≥1 / 4 of intergrown bodies, the calculation method for the concentrate yield at this fineness is: Yield ; Recover all particles containing target minerals. The calculation method of concentrate yield at this fineness is: Yield .

5. The method for determining concentrate yield based on mineral particle size and dissociation degree according to claim 1, characterized in that: When n=5, the 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, the distribution rate of 1 / 5≤conjoined bodies<2 / 5 is recorded as B4, and the distribution rate of conjoined bodies<1 / 5 is recorded as B5.

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

8. A method for determining the recovery rate of a target element based on mineral particle size and dissociation degree, characterized in that: The following steps are involved: S1. Grind the raw ore and select representative samples by reduction; S2, after making optical slices of the representative samples selected in step S1, the particle size of the target minerals to be beneficiated in the raw ore is determined, and the proportion of the target minerals above 800 mesh in the sample is obtained, which is recorded as A; the grade of the target element in the raw ore is recorded as α; and the weight content of the target mineral in the raw ore is determined, which is recorded as W; S3. The representative sample selected in step S1 is made into a light sheet and then the dissociation degree of the target mineral in the sample is detected. The conjoined bodies are determined by the n-point method. The recovery rate of the target element in the target mineral at this fineness is calculated as follows: Recovery rate of target elements ; 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 conjoined body.

9. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to claim 8, 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.

10. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to claim 8, 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 .

11. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to any one of claims 8 to 10, characterized in that: n=4， When only monomers are recovered, the recovery rate of the target element at this fineness is ； When recovering monomers and ≥3 / 4 conjoined bodies, the recovery rate of the target element at this fineness is: ； When recovering monomers and ≥2 / 4 conjoined bodies, the recovery rate of the target element at this fineness is: ； When recovering monomers and ≥1 / 4 conjoined bodies, the recovery rate of the target element at this fineness is: ； Recover all particles containing target minerals. The recovery rate of target elements at this fineness is: 。 12. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to claim 8, characterized in that: When n=5, the 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, the distribution rate of 1 / 5≤conjoined bodies<2 / 5 is recorded as B4, and the distribution rate of conjoined bodies<1 / 5 is recorded as B5.

13. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to claim 8, 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 1 / 5≤conjoined body<2 / 5 , the constant corresponding to conjoined bodies <1 / 5 .

14. The method for determining the recovery rate of target elements based on mineral particle size and dissociation degree according to claim 8, 12 or 13, characterized in that: n=5， When only monomers are recovered, the recovery rate of the target element at this fineness is ； When recovering monomers and ≥4 / 5 conjoined bodies, the recovery rate of the target element at this fineness is: ； When recovering monomers and ≥3 / 5 conjoined bodies, the recovery rate of the target element at this fineness is: ； When recovering monomers and ≥2 / 5 conjoined bodies, the recovery rate of the target element at this fineness is: ； When recovering monomers and ≥2 / 5 conjoined bodies, the recovery rate of the target element at this fineness is: ； Recover all particles containing the target minerals. The recovery rate of the target element at this fineness is: 。

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