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CN-119056555-B - Sample preparation processing method suitable for different types of gold ores

CN119056555BCN 119056555 BCN119056555 BCN 119056555BCN-119056555-B

Abstract

The invention discloses a sample preparation processing method suitable for gold ores of different types, which comprises the steps of crushing gold ores step by step in sequence in different modes, uniformly mixing crushed ore particles, dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight, adjusting the rotation inner diameter of a rod mill and setting the rod mill time according to the type of the ore to be processed, and uniformly mixing the positive sample after rod milling based on the setting of the rod mill inner diameter and the rod mill time to obtain an analysis sample. According to the invention, a rough machining mode is matched with a rod mill adjustable finish machining mode through multistage crushing, gold ore is subjected to multistage crushing to form ore particles, then is reduced to Cheng Zhengyang and a secondary sample, and the rotation inner diameter and time of normal sample rod mill machining are adjusted according to the type of the gold ore, so that the ore particles are rapidly machined into qualified analysis samples.

Inventors

  • LI ZIQI
  • GUO YA
  • LI XUELI

Assignees

  • 李雪力

Dates

Publication Date
20260512
Application Date
20241009

Claims (7)

  1. 1. The sample preparation processing method suitable for the gold ores of different types is characterized by comprising the following steps: Step 100, crushing gold ore in sequence step by step in different modes, uniformly mixing crushed ore particles, and dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight; Step 200, adjusting the rotation inner diameter of the rod mill and setting the time of the rod mill according to the ore type to be processed; Step 300, based on setting the rod mill inner diameter and the rod mill time, uniformly mixing the positive sample rod mill to obtain an analysis sample; in step 200, the specific way to adjust the rotational inner diameter of the rod mill is: confirming the rotation inner diameter of rod mill processing according to the type of the processed ore; according to the rotation inner diameter of the rod mill processing, radially extracting a corresponding number of multistage grinding cylinders; Fixing and closing the extracted multi-stage grinding cylinder to enable the rod grinding area to reach the corresponding rotation inner diameter; the processing of the positive sample into the analysis sample is realized by a rod mill device, and the rod mill device comprises: an outer grinding cylinder, wherein one end of the outer grinding cylinder is provided with a feeding and discharging port cover; The multistage inner grinding cylinder is coaxially and slidably arranged at the other end of the outer grinding cylinder, the multistage inner grinding cylinder comprises a plurality of sub-cylinders, the diameters of the sub-cylinders are gradually reduced, and the sub-cylinders are coaxially and slidably nested, so that the rotating inner diameter of the rod mill is changed by adjusting the number of the sub-cylinders in the outer grinding cylinder; The sealing columns are coaxially and slidably arranged at the outer ends of the multistage inner grinding cylinders, cover discs are arranged at the outer ends of the sealing columns, and are connected with the outer ends of the plurality of sub-cylinders through rotary buckle structures so as to lock and unlock the cover discs and the single sub-cylinder through rotation; The rod mill base is used for providing support for the outer mill cylinder, and a driver is arranged on the rod mill base so as to drive the outer mill cylinder to rotate according to a set rotating speed and a set time; Wherein the outer grinding cylinder and the multistage inner grinding cylinder jointly form a rod grinding cavity with variable diameter, and a plurality of metal rods are axially arranged in the rod grinding cavity; the inner wall of the outer grinding cylinder and the inner walls of the plurality of sub cylinders are respectively provided with a grinding layer, and the outer walls of the plurality of sub cylinders and the outer walls of the plugging columns are respectively provided with a fluff layer which is abutted against the grinding layers.
  2. 2. The sample preparation processing method applicable to different types of gold ores according to claim 1, wherein in step 100, step-by-step crushing in different modes is divided into jaw crushing, twin-roll crushing and millstone crushing in sequence, and the diameter of the produced particles of the millstone crushing is smaller than that of the produced particles of the twin-roll crushing, and the diameter of the produced particles of the twin-roll crushing is smaller than that of the produced particles of the jaw crushing.
  3. 3. The sample preparation processing method applicable to different types of gold ores according to claim 2, wherein in step 100, the specific steps of mixing, weighing and dividing ore particles are as follows: collecting crushed ore particles, uniformly mixing the ore particles in a mixing machine, and weighing to obtain the total weight of the ore particles; the ore particles are divided into a normal sample and at least one sub-sample of equal weight based on the total weight of the ore particles according to the desired weight requirements of the normal sample and the sub-sample.
  4. 4. A sample processing method for different types of gold ores according to claim 1, wherein, An outer barrel ring is arranged at the end part of the outer grinding barrel, which is far away from the feeding and discharging port cover, the outer diameter of the outer barrel ring is equal to the outer diameter of the outer grinding barrel, and the inner diameter of the outer barrel ring is smaller than the inner diameter of the outer grinding barrel; an inner cylinder ring is arranged at the outer end part of the sub-cylinder, the outer diameter of the inner cylinder ring is equal to the outer diameter of the sub-cylinder, and the inner diameter of the inner cylinder ring is smaller than the inner diameter of the inner cylinder ring; The outer barrel ring and the inner barrel ring are formed with gaps for accommodating the fluff layer between the sub-barrels and the outer barrel ring and between two adjacent sub-barrels.
  5. 5. A sample processing method for different types of gold ores according to claim 4, wherein, The inner annular walls of the outer cylinder ring and the inner cylinder rings are respectively provided with clamping grooves distributed around the axes of the outer cylinder ring and the inner annular walls of the inner cylinder rings; Clamping strips parallel to the axes of the clamping strips are arranged on the peripheral wall of the outer end part of the blocking column and the outer annular wall of each inner barrel ring, and each clamping strip is correspondingly and slidably clamped in each clamping groove so that the outer grinding barrel drives the multistage inner grinding barrel and the blocking column to synchronously rotate; And the length of the outer grinding cylinder is equal to the length of each sub-cylinder and the length of the plugging column, and each clamping strip extends to the other ends of the corresponding outer grinding cylinder, sub-cylinder and plugging column.
  6. 6. A sample processing method for different types of gold ores according to claim 5, wherein, The cover disc comprises a base disc, the base disc is fixed at the outer end part of the plugging column, a plurality of control rings are rotatably arranged around the axis of the base disc outside the base disc, and the control rings are coaxially arranged and have diameters corresponding to the inner barrel rings one by one; the inner end part of each control ring is provided with a plurality of bayonet locks distributed around the axis of the control ring, the outer end part of each inner cylinder ring is provided with a plurality of locking grooves distributed around the axis of the control ring, and each bayonet lock corresponds to each locking groove one by one; the base plate is provided with a plurality of annular grooves for accommodating the control rings, a plurality of sliding ports distributed around the axis of the annular grooves are formed in the annular grooves, and the clamping pins penetrate through the sliding ports and can be inserted into the locking grooves.
  7. 7. A sample processing method for different types of gold ores according to claim 6, wherein, A deflector rod is arranged at the outer end part of each control ring, and the deflector rods are staggered around the axis of the control ring.

Description

Sample preparation processing method suitable for different types of gold ores Technical Field The invention relates to the technical field of ore processing, in particular to a sample preparation processing method suitable for different types of gold ores. Background Gold has low abundance value in crust, uneven distribution and special physical and chemical properties, so that gold processing test is a complex work, along with the increasing of test instruments, the factors influencing the analysis result of gold samples are mainly concentrated on sample processing, the sample preparation is unqualified, and the analysis result is lost. The gold ore contains coarse-grain gold, medium-grain gold and fine-grain gold, the embedded gold grains of different types of gold ores are different, and the gold ores of different types are crushed according to fixed parameters in the current sample preparation processing of the gold ores, but the gold ores of different types have different physical properties, and the crushed granularity specification of the gold ores of different types is different due to the different types of the gold grains. Therefore, when the crushing degree is insufficient, the sample preparation is failed to affect the analysis result, and when the crushing degree exceeds the requirement, the influence on the analysis result is small, but the working time is increased and the production cost is increased. Therefore, the existing gold ore sample preparation processing is difficult to quickly produce qualified samples due to the difficulty in adjusting processing parameters according to different types of gold ores. Disclosure of Invention The invention aims to provide a sample preparation processing method suitable for different types of gold ores, so as to solve the technical problem that in the prior art, processing parameters are difficult to adjust according to different types of gold ores to rapidly produce qualified samples. In order to solve the technical problems, the invention specifically provides the following technical scheme: A sample preparation processing method suitable for different types of gold ores comprises the following steps: Step 100, crushing gold ore in sequence step by step in different modes, uniformly mixing crushed ore particles, and dividing the uniformly mixed ore particles into a positive sample and at least one auxiliary sample with the same weight; Step 200, adjusting the rotation inner diameter of the rod mill and setting the time of the rod mill according to the ore type to be processed; Step 300, based on setting the rod mill inner diameter and the rod mill time, uniformly mixing the positive sample after rod milling to obtain an analysis sample. As a preferred embodiment of the present invention, in step 100, the step-by-step crushing in different manners is sequentially classified into jaw crushing, twin-roll crushing and grinding disc crushing, and the diameter of the grinding disc crushed output particles is smaller than that of the twin-roll crushing output particles, and the diameter of the twin-roll crushing output particles is smaller than that of the jaw crushing output particles. As a preferred scheme of the invention, in step 100, the specific steps of mixing, weighing and dividing the ore particles are as follows: collecting crushed ore particles, uniformly mixing the ore particles in a mixing machine, and weighing to obtain the total weight of the ore particles; the ore particles are divided into a normal sample and at least one sub-sample of equal weight based on the total weight of the ore particles according to the desired weight requirements of the normal sample and the sub-sample. As a preferred embodiment of the present invention, in step 200, the specific way to adjust the rotational inner diameter of the rod mill is: confirming the rotation inner diameter of rod mill processing according to the type of the processed ore; according to the rotation inner diameter of the rod mill processing, radially extracting a corresponding number of multistage grinding cylinders; The extracted multi-stage grinding cylinder is fixed and closed so that the rod grinding area reaches the corresponding rotation inner diameter. As a preferred embodiment of the present invention, the processing of the positive sample into the analysis sample is performed by a rod mill apparatus comprising: an outer grinding cylinder, wherein one end of the outer grinding cylinder is provided with a feeding and discharging port cover; The multistage inner grinding cylinder is coaxially and slidably arranged at the other end of the outer grinding cylinder, the multistage inner grinding cylinder comprises a plurality of sub-cylinders, the diameters of the sub-cylinders are gradually reduced, and the sub-cylinders are coaxially and slidably nested, so that the rotating inner diameter of the rod mill is changed by adjusting the number of the sub-cylinders in the outer grinding cyli