A method for quantifying silver minerals in oxidized silver-containing ores

Abstract

The invention belongs to the technical field of process mineralogy, and in particular relates to a method for quantifying silver minerals in oxidized silver-containing ores; the method comprises the following steps: ore grinding, re-selection, flotation, automatic mineralogical analysis, data correction, and quantitative conversion; the invention is beneficial to the quantification of silver minerals in oxidized silver-containing ores, fills the gap in existing research, has reasonable operation, and has representative data.

Description

Technical Field

[0001] The invention belongs to the technical field of process mineralogy, and in particular relates to a method for quantifying silver minerals in oxidized silver-containing ores. Background Art

[0002] Silver has good physical properties and is mainly used in industry, medicine and jewelry. It is irreplaceable in most fields. At present, my country's silver ore resources are insufficient, and the overall recovery, smelting and utilization rates are low. The development and utilization of silver ore resources has always been urgent, and higher requirements have been placed on related technologies.

[0003] Oxidized silver-containing ore resources are also an important category of silver ore resources. Due to their high oxidation degree and low associated degree, they are more difficult to recover efficiently. In addition, because there are many types of silver minerals and the separation properties of different silver minerals vary greatly, targeted and detailed research should be carried out to accurately determine the types of silver minerals and the content of different types of silver minerals, so as to provide reliable technical support for the rational application of ore resources.

[0004] The existing technical means use manual identification, or only a single automatic mineralogical determination, which is difficult to give accurate data. This is mainly because the silver mineral embedding state of silver oxide ore resources is mainly embedded in other mineral cracks and intergranular spaces, and a small amount is embedded in carrier minerals, such as galena and sphalerite. In highly oxidized ores, this part of the carrier sulfide minerals is generally consumed by later oxidation, or is eroded into lead oxide, zinc oxide minerals, or is wrapped by iron oxide minerals. The existing technology has a research gap in this part of the ore, and it is still unable to fully and reasonably describe the properties of the ore. For example, there is generally a certain amount of natural silver minerals in high-oxidation ores. After the formation of these natural silvers, the quantification of the particle size distribution in the giant particle size and coarse particle size is a difficult point. Correspondingly, in order to effectively recover this part of silver, conventional flotation is difficult to complete, and gravity separation operations need to be added. In this way, whether there is a natural silver mineral content above the coarse particle size, how much, and the economic benefits of adding gravity separation operations need to be accurately measured and compared. For another example, sampling and testing silver ore for silver grade is also a difficult point. In the actual process, multiple grades are often tested, with a difference of 20 to 30 g / t. Such results are often unconvincing. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a method for quantifying silver minerals in oxidized silver-containing ores, which has the advantages of accuracy and rationality. It is mainly aimed at oxidized silver-containing ores, can accurately determine the types of silver minerals in the ore, accurately determine the content of various silver minerals, and provide a stable ore silver grade, thereby providing reliable data support for the rational use of oxidized silver-containing ores on site.

[0006] A method for quantifying silver minerals in oxidized silver-containing ores comprises the following steps:

[0007] Step 1: Take two samples, 2 kg each, and grind them to a fineness of 200 mesh and a content of 60% to 85%, which are respectively recorded as a1 and a2;

[0008] Step 2: Samples a1 and a2 in step 1 are screened into a particle size less than 0.074 mm. 10 and a 20 , and a greater than 0.074mm 100 and a 200 For particles larger than 0.074 mm, 100 and a 200 The ore is re-ground to 200 mesh and all the particles pass through to obtain a 101 and a 201 , a 101 with a 10 Mix well to obtain a 11 , a 201 with a 20 Mix well to obtain a 22 ;

[0009] Step 3: Sample a obtained in step 2 11 and a 22 Carry out gravity separation, and control the gravity separation concentrate yield of the two samples to be the same, recorded as A1, the obtained gravity separation concentrates are recorded as b1 and b2 respectively, and the gravity separation tailings are combined and recorded as c;

[0010] Step 4: Open circuit flotation is performed on the gravity separation tailings c, the resulting coarse concentrate is recorded as c1, the resulting tailings are recorded as c2, the yield of the coarse concentrate c1 is recorded as A2, and the yield of the tailings c2 is A3=1-A1-A2;

[0011] Step 5: Fully analyze the silver grade of the re-selected concentrate b1, recorded as B1 g / t, fully analyze the silver grade of the rough concentrate c1, recorded as B2 g / t, and fully analyze the silver grade of the tailings c2, recorded as B3 g / t;

[0012] Step 6, sampling the gravity concentrate b2, the rough concentrate c1, and the tailings c2 to prepare automatic mineralogical test samples, which are recorded as sample x, sample y, and sample z respectively;

[0013] Step 7: Perform automatic mineralogical test analysis on sample x to measure the content of various silver minerals in sample x, recorded as h k , k is 1, 2, 3, 4...k, among which the natural silver content is h1, the argentite content is h2, the pyroxene content is h3, the chalcocite content is h4..., and the content of other silver minerals is h k , then the natural silver content h1: argentite content h2: pyroxene content h3: chalcocite content h4...: other silver mineral content h kThe ratio is recorded as H1:H2:H3:H4...H k ;

[0014] Step 8: Analyze and measure the silver content of various silver minerals in step 7, denoted as i k ;

[0015] Step 9: According to the formula ∑H k *i k =B1 and h1:h2:h3:h4……:h k =H1:H2:H3:H4……:H K , calculate the actual content H of various silver minerals in the gravity separation concentrate b2 k ; Let H k =h k *X, then ∑H k *i k =h1*X*i1+h2*X*i2+h3*X*i3+

[0016] h4*X*i4+……h k *X*i k = B1; therefore, the value of X is obtained, then the actual content of various silver minerals in the gravity separation concentrate b2 is H k =h k *X;

[0017] Step 10: Perform automatic mineralogical test analysis on sample y to measure the content of various silver minerals in the sample, recorded as m k , among which the content of natural silver is m1, the content of argentite is m2, the content of sulfide copper silver is m3, the content of chalcocite silver is m4...the content of other silver minerals is m k , then the natural silver content m1: argentite content m2: pyroxene content m3: chalcocite content m4...: other silver mineral content m k The ratio is recorded as M1:M2:M3:M4...:M K ;

[0018] Step 11: According to the formula ∑M k *i k =B2 and m1:m2:m3:m4……:m k =M1:M2:M3:M4……:M K , calculate the actual content M of various silver minerals in the rough concentrate c1 k ;

[0019] Step 12: Perform automatic mineralogical test analysis on sample z to measure the content of various silver minerals in the sample, recorded as n k , where the content of natural silver is n1, the content of argentite is n2, the content of pyroxene is n3, the content of chalcocite is n4..., the content of other silver minerals is nk , then the natural silver content n1: argentite content n2: sulfide copper silver content n3: chalcocite silver content n4...: other silver mineral content n k The ratio is recorded as N1:N2:N3:N4...:N k ;

[0020] Step 13, according to the formula ∑N k *i k =B3 and n1:n2:n3:n4……:n k =N1:N2:N3:N4……:N k , calculate the actual content N of various silver minerals in tailings c2 k ;

[0021] Step 14, calculate the actual content of various silver minerals in the raw ore sample and the silver grade of the ore, where:

[0022] The natural silver content of this ore is W 自然银 =A1H1+A2M1+A1N1;

[0023] The content of argentite in this ore is W 辉银矿 =A1H2+A2M2+A3N2;

[0024] The content of sulfide copper silver in this ore is W 硫铜银矿 =A1H3+A2M3+A3N3;

[0025] The content of chalcocite silver in this ore is W 辉铜银矿 =A1H4+A2M4+A3N4;

[0026] …

[0027] The content of other silver minerals in this ore is W 其他 =A1H k +A2M k +A3N k ;

[0028] The silver grade of this ore is A1B1+A2B2+A3B3g / t.

[0029] In the step 3, the gravity separation yield A1 is controlled within the range of 0.20% to 0.50%.

[0030] Beneficial effects of the present invention:

[0031] The present invention is easy to implement and reasonable, avoids the inaccuracy of manual identification and simple automatic mineralogical measurement, especially the lack of representativeness and insufficiency, and has the following advantages:

[0032] 1. This method makes up for the shortcomings of existing research methods or inherent models. It is a comprehensive new method, especially for oxidized silver-containing ores. It can also be used for reference and use for ores of other target minerals of the same type. For example, the determination and quantification of target minerals with coarse grains and above. This method can be applied to broaden the research content, even for low-density minerals.

[0033] 2. The operation process is reasonable and efficient. At the same time, a more accurate silver grade of the ore can be obtained, avoiding the problem of unrepresentative sampling of oxidized silver ore, which can be reasonably solved in this method (the general national standard sampling volume for silver grade analysis is only 3g, which inevitably leads to insufficient sampling and poor representativeness, especially for oxidized ores, which are even more uneven).

[0034] 3. In the process of automatic mineralogical measurement, the monomer dissociation degree, particle size characteristics and morphological characteristics of different silver minerals can be analyzed and summarized at the same time. Moreover, the process mineralogical parameters calculated by this method are more reasonable and more representative. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without creative work.

[0036] Figure 1 This is a flow chart of step four of the present invention. DETAILED DESCRIPTION

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0038] Example 1

[0039] A method for quantifying silver minerals in oxidized silver-containing ores comprises the following steps:

[0040] Step 1: Take two samples, 2 kg each, and grind them to a fineness of 200 mesh (-0.074 mm) and a content of 60% to 85%, which are respectively recorded as a1 and a2;

[0041] Step 2: Samples a1 and a2 in step 1 are screened into a particle size less than 0.074 mm. 10 and a 20, and a greater than 0.074mm 100 and a 200 For particles larger than 0.074 mm, 100 and a 200 The ore is re-ground to 200 mesh (-0.074mm) and all the particles pass through to obtain a 101 and a 201 , a 101 with a 10 Mix well to obtain a 11 , a 201 with a 20 Mix well to obtain a 22 ;

[0042] Step 3: Sample a obtained in step 2 11 and a 22 Carry out gravity separation, and control the gravity separation concentrate yield of the two samples to be the same, recorded as A1, the obtained gravity separation concentrates are recorded as b1 and b2 respectively, and the gravity separation tailings are combined and recorded as c;

[0043] Step 4: open-circuit flotation of the gravity separation tailings c, specifically: add the gravity separation tailings c into the flotation tank, add sodium carbonate, sodium sulfide, butyl xanthate, butyl ammonium black medicine and 2 # Oil, aeration flotation to obtain coarse concentrate, flotation time and reagent dosage details Figure 1 , the rough concentrate produced is recorded as c1, the tailings produced is recorded as c2, the yield of the rough concentrate c1 is recorded as A2, then the yield of the tailings c2 is A3 = 1-A1-A2;

[0044] Step 5: Fully analyze the silver grade of the re-selected concentrate b1, recorded as B1 g / t, fully analyze the silver grade of the rough concentrate c1, recorded as B2 g / t, and fully analyze the silver grade of the tailings c2, recorded as B3 g / t;

[0045] Step 6, sampling the gravity concentrate b2, the rough concentrate c1, and the tailings c2 to prepare automatic mineralogical test samples, which are recorded as sample x, sample y, and sample z respectively;

[0046] Step 7: Perform automatic mineralogical test analysis on sample x to measure the content of various silver minerals in sample x, recorded as h k , (k is 1, 2, 3, 4...k, representing natural silver, argentite, pyroxene, chalcocite...other silver minerals), that is, the natural silver content is h1, the argentite content is h2, the pyroxene content is h3, the chalcocite content is h4..., and the content of other silver minerals is h k , then the natural silver content h1: argentite content h2: pyroxene content h3: chalcocite content h4...: other silver mineral content h k The ratio is recorded as H1:H2:H3矿 :H4……H k ;

[0047] Step 8: Analyze and measure the silver content of various silver minerals in step 7, denoted as i k , where the silver content of natural silver is i1, the silver content of argentite is i2, the silver content of pyroxene is i3, the silver content of chalcocite is i4... the silver content of other silver minerals is i k ;

[0048] Step 9: According to the formula ∑H k *i k =B1 and h1:h2:h3:h4……:h k =H1:H2:H3:H4……:H K , calculate the actual content H of various silver minerals in the gravity separation concentrate b2 k ;

[0049] Step 10: Perform automatic mineralogical test analysis on sample y to measure the content of various silver minerals in the sample, recorded as m k , among which the content of natural silver is m1, the content of argentite is m2, the content of sulfide copper silver is m3, the content of chalcocite silver is m4...the content of other silver minerals is m k , then the natural silver content m1: argentite content m2: pyroxene content m3: chalcocite content m4...: other silver mineral content m k The ratio is recorded as M1:M2:M3:M4...:M K ;

[0050] Step 11: According to the formula ∑M k *i k =B2 and m1:m2:m3:m4……:m k =M1:M2:M3:M4……:M K , calculate the actual content M of various silver minerals in the rough concentrate c1 k ;

[0051] Step 12: Perform automatic mineralogical test analysis on sample z to measure the content of various silver minerals in the sample, recorded as n k , where the content of natural silver is n1, the content of argentite is n2, the content of pyroxene is n3, the content of chalcocite is n4..., the content of other silver minerals is n k , then the natural silver content n1: argentite content n2: sulfide copper silver content n3: chalcocite silver content n4...: other silver mineral content n k The ratio is recorded as N1:N2:N3:N4...:N k ;

[0052] Step 13, according to the formula ∑Nk *i k =B3 and n1:n2:n3:n4……:n k =N1:N2:N3:N4……:N k , calculate the actual content N of various silver minerals in tailings c2 k ;

[0053] Step 14, calculate the actual content of various silver minerals in the raw ore sample and the silver grade of the ore, where:

[0054] The natural silver content of this ore is W 自然银 =A1H1+A2M1+A1N1;

[0055] The content of argentite in this ore is W 辉银矿 =A1H2+A2M2+A3N2;

[0056] The content of sulfide copper silver in this ore is W 硫铜银矿 =A1H3+A2M3+A3N3;

[0057] The content of chalcocite silver in this ore is W 辉铜银矿 =A1H4+A2M4+A3N4;

[0058] …

[0059] The content of other silver minerals in this ore is W 其他 =A1H k +A2M k +A3N k ;

[0060] The silver grade of this ore is A1B1+A2B2+A3B3g / t;

[0061] In the step 3, the gravity separation yield A1 is controlled within the range of 0.20% to 0.50%.

[0062] The sampling of 2kg in step 1 can be adjusted appropriately in actual operation, but should not be too small, such as 1kg. Under the condition of 0.2% gravity separation yield, the weight of gravity separation concentrate is 2g. For subsequent chemical analysis and preparation of automatic mineralogical analysis samples, the sample amount is insufficient;

[0063] The grinding fineness in step 1 is determined to be 200 mesh (-0.074mm) and the content is in the range of 60% to 85%. Two aspects are mainly considered. First, for the subsequent gravity separation process, too coarse or too fine is not good for gravity separation. Second, considering the process of silver flotation, the grinding at this stage should be as coarse as possible to avoid over-grinding. Directly skipping the grinding fineness of the flotation process has no guiding significance.

[0064] Minerals larger than 0.074 mm in step 2 are re-ground, otherwise it will affect the yield and sample uniformity of subsequent gravity separation operations;

[0065] The gravity separation yield A1 in step 3 can be set in the range of 0.20% to 0.50%. Based on the actual operation experience, the recovery rate of silver minerals is guaranteed to a certain extent, so that the types of silver minerals are covered as comprehensively as possible and more representative;

[0066] The open circuit flotation described in step 4 is only to obtain a coarse concentrate, the purpose of which is to make more silver minerals that can be effectively measured more representative. The silver minerals that are often lost in the tailings are difficult to measure in large quantities during the automatic mineralogy measurement process.

[0067] The dosage and flotation time of the open circuit flotation described in step 4 are based on actual operation experience, and generally sufficient silver minerals can be recovered. The specific operation can be adjusted appropriately.

[0068] The analysis of silver mineral ratio in step 7, combined with the measured silver mineral content, is also mainly based on accuracy considerations. Combined with the grade of chemical analysis, the calculated mineral content data is relatively more accurate;

[0069] The types of silver minerals analyzed in step 7 are more than the above-mentioned types and can be adjusted based on actual conditions;

[0070] The silver content of the silver mineral in step 8 is generally its average silver content.

[0071] Example 2

[0072] A method for quantifying silver minerals in oxidized silver-containing ores comprises the following steps:

[0073] Step 1: Take two samples, 2 kg each, and grind them to a fineness of -0.074 mm and a content of 70%, respectively recorded as a1 and a2;

[0074] Step 2: Samples a1 and a2 in step 1 are screened into two particle sizes: less than 0.074 mm and greater than 0.074 mm. The ore with a particle size greater than 0.074 mm is re-grinded until all 200 meshes (-0.074 mm) pass through. After the samples are mixed, they are recorded as a 11 and a 22 ;

[0075] Step 3: Sample a from step 2 11 and a 22 Gravity separation is carried out, and the gravity separation yield A1 is 0.20%, the gravity separation concentrates are recorded as b1 and b2, and the gravity separation tailings are recorded as c;

[0076] Step 4: Open circuit flotation is performed on the gravity separation tailings c, and the yield A2 of the coarse concentrate c1 is 5.00%, and the yield A3 of the tailings c2 is 94.80%;

[0077] Step 5: The silver grade B1 of the gravity concentrate b1 is 27632.50 g / t, the silver grade B2 of the rough concentrate c1 is 2244.64 g / t, and the silver grade B3 of the tailings c2 is 85.06 g / t;

[0078] Step 6, sampling the gravity concentrate b2, the rough concentrate c1, and the tailings c2 to prepare automatic mineralogical test samples, which are recorded as sample x, sample y, and sample z respectively;

[0079] Step 7: Perform automatic mineralogical test analysis on samples x, y, and z. The results are shown in Table 2.

[0080] Step 8: Analyze and measure the silver content of various silver minerals in step 7, denoted as i k , the results are shown in Table 3;

[0081] Step 9: Calculate the actual content of silver minerals in each product according to the formula. The results are shown in Table 4. The detailed calculation is as follows: Formula ∑H k *i k = = B1 and h1:h2:h3:h4... = H1:H2:H3:H4..., assuming H1 is 0.7575%X, then this formula is equivalent to 0.7575%X*98.30%+0.7575%X*87.30%+1.010%X*52.00%+1.2625%X*68.10%=0.2%*27632.50*10 -6 , we get X = 0.99, that is, h1 = H1 = 0.75%, and the rest is the same, the calculation process is omitted;

[0082] Step 10: According to formula W 自然银 =A1H1+A2M1+A1N1;

[0083] Then W 自然银 =0.2%*0.75%+5%*0.152%+94.8%*0.00517%=0.014%, and other silver minerals can be obtained in turn, see Table 5 for details;

[0084] Step 11: The silver grade of the ore is A1B1+A2B2+A3B3g / t

[0085] =0.2%*27632.50+5%*2244.64+94.8%*85.06=248.13g / t

[0086] Table 1 Results of the gravity separation experiment

[0087]

[0088] Table 2 MLA measurement and analysis results

[0089]

[0090]

[0091] Table 3 Analysis results of silver content in silver minerals

[0092]

[0093] Table 4 Actual silver mineral conversion results

[0094]

[0095] Table 5 Calculation results of silver mineral content and silver metal distribution rate

[0096] Silver Mineral Types Silver mineral content (%) Silver content of minerals (%) <![CDATA[Metal content (10 -6 )]]> Silver distribution rate (%) Natural Silver 0.014 98.30 137.62 55.46 Argentite 0.005 87.30 43.65 17.59 Sulfur copper silver ore 0.005 52.00 26.00 10.48 Chalcocite 0.006 68.10 40.86 16.47 total(%) 0.03 / 248.13 100.00

[0097] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

[0098] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0099] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for quantifying silver minerals in oxidized silver-containing ores, characterized in that The following steps are involved: Step 1: Take two samples, 2 kg each, and grind them to a fineness of 200 mesh and a content of 60% to 85%, which are recorded as a1 and a2 respectively; Step 2: Samples a1 and a2 in step 1 are screened into a particle size less than 0.074 mm. 10 and a 20 , and a greater than 0.074mm 100 and a 200 For particles larger than 0.074 mm, 100 and a 200 The ore is re-ground to 200 mesh and all the particles pass through to obtain a 101 and a 201 , a 101 with a 10 Mix well to obtain a 11 , a 201 with a 20 Mix well to obtain a 22 ; Step 3: Sample a obtained in step 2 11 and a 22 Carry out gravity separation, and control the gravity separation concentrate yield of the two samples to be the same, recorded as A1, the obtained gravity separation concentrates are recorded as b1 and b2 respectively, and the gravity separation tailings are combined and recorded as c; Step 4: Open circuit flotation is performed on the gravity separation tailings c, the resulting coarse concentrate is recorded as c1, the resulting tailings is recorded as c2, the yield of the coarse concentrate c1 is recorded as A2, and the yield of the tailings c2 is A3=1- A1-A2; Step 5: Fully analyze the silver grade of the gravity concentrate b1, recorded as B1g / t, fully analyze the silver grade of the rough concentrate c1, recorded as B2g / t, and fully analyze the silver grade of the tailings c2, recorded as B3 g / t; Step 6, sampling the gravity concentrate b2, the rough concentrate c1, and the tailings c2 to prepare automatic mineralogical test samples, which are recorded as sample x, sample y, and sample z respectively; Step 7: Perform automatic mineralogical test analysis on sample x to measure the content of various silver minerals in sample x, recorded as h k , k is 1, 2, 3, 4...k, among which the natural silver content is h1, the argentite content is h2, the pyroxene content is h3, the chalcocite content is h4..., and the content of other silver minerals is h k , then the natural silver content h1: argentite content h2: pyroxene content h3: chalcocite content h4...: other silver mineral content h k The ratio is recorded as H1:H2:H 3矿 :H4……H k ; Step 8: Analyze and measure the silver content of various silver minerals in step 7, denoted as i k ; Step 9: According to the formula ∑H k *i k =B1 and h1:h2:h3:h4……:h k =H1:H2:H3:H4……:H K , calculate the actual content H of various silver minerals in the gravity separation concentrate b2 k ; Let H k =h k *X, then ∑H k *i k =h1*X*i1+ h2*X*i2+ h3*X*i3+ h4*X*i4+……h k *X*i k = B1; therefore, the value of X is obtained, then the actual content of various silver minerals in the gravity separation concentrate b2 is H k =h k *X; Step 10: Perform automatic mineralogical test analysis on sample y to measure the content of various silver minerals in the sample, recorded as m k , among which the content of natural silver is m1, the content of argentite is m2, the content of sulfide copper silver is m3, the content of chalcocite silver is m4...the content of other silver minerals is m k , then the natural silver content m1: argentite content m2: pyroxene content m3: chalcocite content m4...: other silver mineral content m k The ratio is recorded as M1:M2:M3:M4...:M K ; Step 11: According to the formula ∑M k * i k =B2 and m1:m2:m3:m4……:m k = M1:M2:M3:M4……:M K , calculate the actual content M of various silver minerals in the rough concentrate c1 k ; Step 12: Perform automatic mineralogical test analysis on sample z to measure the content of various silver minerals in the sample, recorded as n k , where the content of natural silver is n1, the content of argentite is n2, the content of pyroxene is n3, the content of chalcocite is n4..., the content of other silver minerals is n k , then the natural silver content n1: argentite content n2: sulfide copper silver content n3: chalcocite silver content n4...: other silver mineral content n k The ratio is recorded as N1:N2:N3:N4...:N k ; Step 13, according to the formula ∑N k *i k =B3 and n1:n2:n3:n4……:n k = N1:N2:N3:N4……:N k , calculate the actual content N of various silver minerals in tailings c2 k ; Let N1: N2: N3: N4...: N k The common multiple of is Z, then ∑N k *i k = n1*Z*i1+ n2*Z*i2+ n3*Z*i3+ n4*Z*i4+……n k *Z*i k = B3; therefore, the value of Z is obtained, then the actual content of various silver minerals in the tailings c2 is N k =n k *Z; Step 14, calculate the actual content of various silver minerals in the raw ore sample and the silver grade of the ore, where: The natural silver content of this ore is W 自然银 =A1H1+ A2M1+A1N1; The content of argentite in this ore is W 辉银矿 = A1H2+ A2M2+A3N2; The content of sulfide copper silver in this ore is W 硫铜银矿 = A1H3+ A2M3+A3N3; The content of chalcocite silver in this ore is W 辉铜银矿 = A1H4+ A2M4+A3N4; …… The content of other silver minerals in this ore is W 其他 =A1H k + A2M k +A3N k ; The silver grade of this ore is A1B1+A2B2+ A3B3g / t.

2. The method for quantifying silver minerals in oxidized silver-containing ores according to claim 1, characterized in that In the step 3, the gravity separation yield A1 is controlled within the range of 0.20% to 0.50%.

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