Mineral processing laboratory Determination of pulp concentration The slurry concentration is one of the most important factors affecting the ore dressing index during the beneficiation process. In the grinding process, the slurry concentration affects the efficiency of the grinding technology. When grading, the slurry concentration has a great influence on the classification granularity. Generally, the concentration is high and the classification is coarser, and vice versa. During the flotation process, the slurry concentration affects the flotation time and the amount of the agent. During the dehydration process, the slurry concentration affects the productivity of the thickener and the filter. There are many methods for determining the concentration of pulp. Concentration pots are still used in the plant, and in the future, automatic detectors or devices with automatic concentration control will be adopted. The principle of using the concentration pot to determine the concentration is to first measure the density of the slurry, and calculate the concentration of the slurry by the following formula: p=δ(Δ-1)/Δ(δ-1)×100% Where p is the concentration of the pulp, ie the weight percentage of the solid content; Δ——the density of ore, g/cm3; Δ - the density of the pulp, grams / cubic centimeter. The density of the ore is known. The empty weight and volume of the pot can also be measured in advance. When the pot is filled with the slurry and the weight is weighed, the density of the slurry can be calculated. Substituting the formula can determine the concentration of the slurry. In the factory, a form is usually prepared in advance. For a specific concentration, the pot is weighed to the weight of the slurry, and the concentration is checked from the table. If the volume of the pot is 1000 ml, the concentration of the slurry is weighed and the concentration is found from the table. For example, if the ore density is 3.8 g/cm 3 , the actual pulp weight is 1,284 g, and the concentration is 30% from the table, and the slurry solid-liquid ratio is 1:2.33. This form can be expanded. Atomic absorption laboratory Determination of fineness of grinding products In the grinding process, in order to achieve sufficient monomer separation in the useful minerals in the ore, in order to create favorable conditions for the sorting operation, after the experimental study, the grinding fineness is determined and expressed as a percentage of the -200 mesh content. . There are many ways to check the fineness. The factory is generally in the classifier overflow sampling and analysis. Here is a rapid screening method: using a volume of slurry bottles (usually 1 liter), filled with slurry samples and weighed. The weight of the slurry plus bottle is q1, and the slurry is poured into a sieve immersed in a water basin (using a 200 mesh or 100 mesh standard sieve) for wet sieving, sprayed with a fine water stream until the washed water is cleaned, and then Move the product on the sieve back to the bottle and add water to the same mark as the original slurry. Reweighing, the weight of the product on the sieve and the weight of the water is q, the weight of the known bottle is a, and the volume of the bottle is b (ml) of the product on the sieve (+200 mesh or +100 mesh). Rate: x=(qab)/(q1-ab)100% It should be noted that this test method assumes that the density of the product on the screen and the product under the sieve are equal, and if their density differs greatly, the result of this inspection method is an approximation. Some of the selection plants take a comprehensive fine sample every shift, and after drying in the processing room, 100 grams are shrunk, and the fineness is measured by wet screening. Cyanide laboratory Detection of pulp pH The pH of the slurry is an important factor affecting the flotation process. The PH value of the copper sulfide ore flotation is generally required in the range of 9-11, copper sulfur mixed concentrate flotation separation, PH value is required to 11-13. Flotation plants generally have to test the pH value of the slurry, and a few selection plants use the method of measuring the free base. For the detection of the pH value of the slurry, the general inspection can be carried out with a pH test paper. For more accurate measurements, use colorimetry or potentiometry. Colorimetry is rarely used. The potential method is based on the fact that the two electrodes inserted into the liquid to be tested are capable of determining the pH of the solution according to the magnitude of the concentration of hydrogen ions in the liquid to generate a corresponding potential difference. Its reference electrode is usually a calomel electrode and the other electrode is a glass electrode. The potential method has a high precision for measuring the pH value, and can be continuously measured. The result measured by the remote distance can be automatically recorded without filtering the slurry, and the electrode can be inserted into the slurry. When the adjuster uses lime, the alkalinity of the slurry can be used to determine the free calcium oxide content of the slurry. The method is as follows: firstly filter the slurry, take 25 ml of the filtrate with a volumetric flask, and pour into a cup. Add one or several drops of the phenolphthalein indicator to the cup, and the mixture is colorless in the filtrate or acidic solution. The solution was titrated with a 0.1 N sulfuric acid solution until discoloration, and the acid consumption was noted. The content of free oxygenated calcium in the slurry can be calculated by the following formula: CaO content = R · a · NH 2 SO 4 / b 1000 g / cubic meter. Where a - the number of milliliters of H2SO4 solution used for titration; b - the amount of filtrate used for the determination, in milliliters; N - the equivalent concentration of H2SO4 solution for titration; R - the gram equivalent of CaO, R = 28. When the concentration of sulfuric acid was 0.1 equivalent and b was 25 ml, the CaO content was 2800 a/25 = 12 12 g/m 3 . Assuming that the 0.1 N sulfuric acid solution consumption is 3.5 ml at the time of measurement, the free calcium oxide content in the slurry is 112 x 3.5 = 392 g/m 3 . In the factory, a conversion table is generally prepared in advance, and the content of free calcium oxide is determined according to the titration result. Flotation laboratory Chemical composition check The useful components of the ore and mineral processing products and their impurity content are determined by chemical analysis. The raw ore that has been selected by the factory, the concentrates and tailings obtained during the sorting process are sampled and analyzed. Sometimes you need to know the situation of a certain sorting operation, or you can use a quick chemical analysis, that is, sampling and analyzing an operation product every hour or two to find the problem in time. Magnetic separation laboratory Determination of moisture Raw ore and concentrate should be measured for moisture to calculate the actual weight of the ore and concentrate. The current plant's determination of moisture is determined by weighing the wet sample and then weighing it at a temperature of 100-105 degrees to a constant weight. The difference is the percentage of the weight of the wet sample. Is the moisture content (humidity) of the sample. Laboratory small ball mill Administration check The flotation plant should check the pharmaceutical system and the dosage of each dosing point. After the ore dressing agent is prepared in the dispensing room, it is sent to the oil medicine box of each dosing point, and the medicine enters the various dispensing points of the flotation from the oil medicine box along the catheter. For the detection of the dosage of the medicament, the flow rate of the medicament can be manually measured by the measuring cup, and then the amount is calculated according to the following formula. A=q×C×δ×60/Q g/ton mine In the middle A——the dosage of raw materials per ton of raw ore, g/ton; q - the flow rate of the drug added per minute, ml / min; C——agent concentration, %; δ - the density of the drug at a concentration of C, g / ml; Q - the amount of processing per hour, tons / hour. Some concentrators use numerically controlled drug delivery machines to measure the amount of drug in a timely and accurate manner. Inspection of useful mineral materials In general, in the optional study of ore, the material composition, mineral composition, symbiotic relationship between each mineral and the grain size characteristics of the ore have been studied in detail, which provides a basis for the design of the ore dressing plant. However, in the ore dressing production, it is sometimes necessary to examine the beneficiation process and still carry out mineral inspection on the ore or mineral processing products. Combined with mineral analysis and sieve analysis, it is possible to check which useful minerals exist in the ore and mineral processing products, the symbiotic relationship between the minerals and the dissociation after grinding. The composition of the material in the ore can be determined by chemical analysis, phase analysis and microscopic analysis. Microscopic study of flakes and flakes of ore and beneficiation products can determine the mineral composition, the size of the mineral particles, the monomer dissociation of useful minerals in the grinding products and beneficiation products, and the nature and quantity of the connected organisms. The factory also uses microscopes and binocular magnifiers to quickly inspect the grinding products and mineral processing products. Determination of flotation temperature Some plants need to be mined at a certain temperature, and the temperature of the slurry should be checked. Generally use a thermometer. ( Product Description Xy-4-3A Drillng Rig,Drilling Machine,Drillng Rig,Engineering Drilling Rig JIANGSU XI TEC ENVIRONMENTAL&DRILLING EQUIPMENT COMPANY CO.LTD , https://www.nbxitecdrilling.com
I. Some Features of XY-4-3A Drillng RigNew Condition Core Sample drill
1. Power can be electrical motor or diesel engine, as per your project needs;
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3. Mounted in 2-wheel trailer,easy to move around when working;
4. Easy to disassemble,installed and operation, the Heaviest part is less than 100KG, convenient for maintenance and transport;
5. Using alloy bit for soft ground,using diamond bits for hard ground.
II. Customers
This hydraulic drilling rig has been successfully sold to Kenya, Peru, Chile, South Africa, Haiti, Congo, Philippines, Malysia, Gabon, Kenya, Columbia, Russia, Uganda, Panama, etc. Some of them are for personal use, some to do engineering, some trading companies. Namibia customers are used to do charity for poor children wells, we give him a big discount without any profit. You are welcomed to visit our company and factory at any time!
The amount of ore processing and concentrate is the quantity indicator of ore dressing , and the measurement is required to be accurate. There are many calculation methods for ore entering the plant, mainly based on the mode of transportation. Generally, it is metered on the belt conveyor in the factory. Most of the plants are equipped with mechanical belt scales on the ore belt of the grinding machine, or the electronic belt scale is automatically metered. The error requirement is not more than ±2%, so the belt scale should be used frequently. check. Small-scale plants are also used for manual metering, that is, scraping a certain length of ore on the ore belt of the mill, and weighing the belt according to the belt speed. Scrap several times per hour and take the average. Manual measurement is inconvenient and the error is large. When the ore is transported by hand cart or car, it is commonly used for metering. If it is transported by wide-track vehicles, it is measured by rail scale. The two measurement methods have large errors, so the actual treatment of the ore dressing plant is based on the amount of ore fed by the ball mill . The measurement of the concentrate is also determined according to the mode of transportation. It is common to install an automatic scale on the unloading belt of the filter or to install an automatic weighing hopper at the discharge of the concentrate belt. If the actual concentrate quantity in the factory is transported by car, it will be weighed in the ground. When transported by train, it will be weighed by the track scale. The difference between the original ore and the concentrate is the tailings.