During the sampling and construction process, the following items should be noted: (1) The actual position of the sampling should be consistent with the position of the sampling design arrangement. The weight of the sample sample at each sampling point should be basically consistent with the sampling design weight. During the sampling construction and processing of the ore sample, any impurities should be prevented from being mixed into the ore sample. The ore samples collected at each sampling point should be piled separately, no mixing is allowed, and no loss of the ore sample is allowed. (2) In order to make the scaled ore sample fully representative of the mined sample, the sample processing should be carried out according to the procedure (crushing, sieving, mixing, shrinking). The weight of the sample after shrinking must be greater than (or Equal to the weight calculated by the formula Q=Kd 2 . (3) Verification and adjustment of the mine sample position. It should be checked whether the sample position of the mined ore is consistent with the sample position of the sampling design. If the difference is not large, the weight can be reduced and weighed according to the weight required by each sampling point; if the difference is large, the sampling should be properly adjusted. Take the weight of the ore sample, or select another point in the same grade interval, or add a small number of sampling points until the sampling requirements are met. (4) Packaging and transportation of mineral samples. The ore samples tested in the laboratory shall be packaged separately according to different sampling points (or different ore types, different industrial grades and different grades). The sample must be packed firmly to prevent leakage, moisture and easy handling. The instruction cards and the total sample delivery form inside and outside the package of each sample must be clearly filled out. The content of the sample description card should include the type, number, sampling location and actual weight of the sample. Write the number outside the box to facilitate identification. After the ore sample is packaged and checked before shipment, it shall be inspected and checked, and then sent along with the sampling method to send the test sample to the test unit. Except for the removed ore samples, the remaining ore samples should be stacked separately according to the sampling points and kept properly for use as a secondary sample.
Manifold Filter, Spray guns contain filters that help provide a cleaner spray out of the gun tip. Here are some Spray Gun filter questions we`ve answered in the past, more than once.
1. What does a spray gun filter do?
The filter, which typically resides inside the handle of the gun, filters the paint one last time before it leaves the spray gun. The gun filter prevents debris from entering the tip. Preventing debris from entering the tip helps eliminate blockage, and therefore downtime, and keeps the spray surface clean.
2. Are there different types of filters? Which should I choose?
In general, the main difference in spray gun filters is in the screen size. You`ll want to choose a finer screen mesh for lacquers and fine finishes. A larger mesh can be used for latex paints.
3. How often do gun filters need to be replaced?
This can vary, too, depending on the amount of [trash", larger unwanted particulates, and the size of the mesh of your filter. Fine filters will need to be replaced more often. Why not clean them? Well, you can clean a filter, but generally these filters become so clogged over time that it is not worth the amount of work, and time, to clean them. It`s usually easiest to replace.
4. How often do gun filters need to be cleaned?
It is recommended that you clean the gun filter every time you clean your sprayer. This will give you the longest life for your spray gun filter. Eventually, though, you will have to replace the filter. Filters don`t wear out, as their made of stainless steel that prevents rust and corrosion, but they do accumulate trash and waste, despite the best efforts to keep them clean.
If you`re using an extremely fine mesh filter there is a chance that you could need to clean the filter during a job. The easiest way to tell a filter needs to be cleaned, during spraying, is the spray gun`s reversible tip begins to clog on a constant basis.
5. What would happen if you used the wrong filter for the tip?
It`s important to use the right filter mesh for the paint you`re spraying. If you use a wide mesh with a tip too small you`ll have a tip that constantly clogs. Using a fine mesh with a wide open tip you`d run into paint flow restriction. This can put unwanted stress on the sprayer, possibly reducing its lifespan.
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