What kind of filter paper can be used to prevent the components in the liquid from being lost?

I make grinding machine filter paper, for grinding fluid filtration, the general filtration accuracy is about 30 microns, mainly to filter out the impurity particles in the grinding fluid, will not affect the loss of water quality components in the liquid.

Because the water molecules should be about microns, this size of filter paper is unlikely to affect the composition.

It is suitable for the filtration of industrial oils such as metal cutting fluid filtration, grinding fluid filtration, wire drawing oil filtration, rolling oil filtration, slurry filtration, lubricating oil filtration, and insulating oil filtration.

Automobile processing Auto parts, cylinder heads, cylinder blocks, special filter paper for engine filtration.

grinding machine processing cutting fluid; grinding fluids; Coolant filter paper.

Bearing processing Cutting fluid, grinding fluid centralized filtration special filter paper.

aluminium processing, rolling oil; emulsions; Grinding machine cutting fluid filter paper.

Copper processing, hot continuous rolling cooling emulsion; Wire drawing machine emulsion filter paper.

Iron and steel processing, sheet rolling emulsion; Grinding machine grinding fluid filter paper.

Yantai Chengbo Machinery Technology Co., Ltd. provides filter consumables from 7 to 50 precision grades for vacuum negative pressure paper belt filter, Hoffman filter and gravity paper belt filter use.

We can customize cutting and filtering consumables, and paper rolls can be made into various specifications, with a minimum of 400mm and a maximum of 2300mm

Paper rolls are available in a variety of diameters and a variety of paper tube inner diameters, filter paper thicknesses, weights 18-82g m2, <>

The size of the mesh of the filter paper must be smaller than the volume of the ingredients in the liquid.

It is easy to clog the filter paper during filtration, which is always a tricky problem when separating liquids from sediments, and the solution is:

1) Good precipitation before filtration.

1. The sign of good precipitation is that the solution is clear, the particles of the precipitate are sufficiently large, the boundary between the solution and the precipitate is clear, and the precipitate sinks to the bottom without suspension.

2. Strictly implement the precipitation conditions of different precipitation, which are specified in the corresponding standards.

For example, in the summary of the determination of silica in GB T176-2008, the sample is sintered with anhydrous sodium carbonate, dissolved with hydrochloric acid, and solid ammonium chloride is added to evaporate on a steam water bath until it is dry and continues to evaporate for 10-15 minutes to make the silicic acid condense, and the large particles are carefully stirred and crushed with a flat-headed glass rod during evaporation. Then heat hydrochloric acid (3+97) to dissolve.

2) Adopt appropriate filtration methods.

1. Select filter paper according to the regulations. Filter paper is qualitative and quantitative according to its use; According to the filtration speed, there are fast, medium and slow speeds.

2. Try to filter by pouring method.

3. For the filtration of some precipitate precipitates, pulp can be added and should be added, such as ammonium phosphomolybdate filtration.

4. Use a suction pump for decompression filtration if necessary.

5. Control the temperature of the lotion well.

6. The precipitate on the filter paper can be gently and carefully washed up with the water flow of the lotion solution.

7. Other appropriate methods.

(1) The principle of filtration is based on the fact that the solid cannot pass through the small holes on the filter paper, and the liquid can pass through the small holes on the filter paper. In addition, the beaker connected to the filtrate is not clean, which will also cause the same result, etc. (2) Filtration principle The molecules or ions of solvent and solute can penetrate the filter paper, and the insoluble solids cannot penetrate the filter paper and remain on the filter paper Scope of application Separate the mixture of insoluble solids and liquids or remove the insoluble impurities in the mixture Method Filter for example Crude salt purification According to the above knowledge, the filtration method requires one to be soluble and the other to be insoluble; Separate the solid from the liquid or the soluble solid from the insoluble solid Therefore, the answer is: (1) the filter paper is damaged, the liquid level is higher than the edge of the filter paper during filtration, the beaker that accepts the filtrate is not clean, and there are bubbles on the filter paper and the funnel wall (the filter paper is easy to break after wetting, and the bubbles between the funnel wall will cause the filter paper to break and affect the filtration effect), the glass rod is close to the side of the single-layer filter paper (2) Sieve the powder, rice, and sand with a sieve, and the vermicelli factory uses a cloth bag to filter starch, and the water is purified in the waterworks

1) As can be seen from the figure, the filtering operation is carried out;

2) The function of the glass rod is to introduce the liquid into the funnel, and the edge of the filter paper should be higher than the liquid level, so as to prevent the filtered liquid from flowing directly into the beaker without passing through the filter paper, and the purpose of filtration cannot be achieved;

3) After adding soapy water, soft water produces more foam and hard water produces less foam, so soapy water can distinguish soft water from hard water; The method of heating and boiling is commonly used in life to reduce the hardness of water;

4) The original defense model of filtration is based on the fact that the solid cannot pass through the small hole on the filter paper, and the liquid can pass through the small hole on the filter paper, and any mistake that enters the filtrate without filtering can cause the filtrate to be turbid; In addition, the beaker receiving the filtrate is not clean, which will also cause the same result, such as the filter paper is damaged, the liquid level is higher than the edge of the filter paper during celery filtration, and the beaker that receives the filtrate is not clean, which will cause the filtrate to remain turbid after filtration;

So the answer is: (1) filtration;

2) drainage; Higher than; If it is higher than the edge of the filter paper, the liquid sock will flow down along the gap between the filter paper and the funnel, and the purpose of filtration cannot be achieved;

3) soapy water; Heating and boiling;

4) Broken filter paper; The liquid level is higher than the edge of the filter paper

This is not right.

The object on the filter paper refers to the solids that have been reacted (including the solids formed by the reaction and the solids that have not reacted).

The substances in the filtrate refer to the liquid after the reaction (including the liquid produced by the reaction and the liquid that is not reacted).

For example: CuCl2 + Fe ==Feci2 + Cu

If excess Fe is added, filter after the reaction, and the objects on the filter paper are the Cu generated by the reaction, and the unreacted Fe

The substance in the filtrate is FeCl2 formed by the reaction

If Fe is not added enough, it is filtered after the reaction, and the delicate object on the filter paper is the Cu generated by the reaction

The substances in the filtrate are FeCl2 formed by the reaction, and CuCl2 that is not reacted

Only the proportion of reactants added is such that it happens to be completely reacted, and after the reaction is filtered, the object on the filter paper is completely solid after the reaction.

The substances in the filtrate are completely the liquid after the reaction.

As for what you said, what is the form of the substance that cannot react, and what form is it in the end.

For example, if CuCl2 reacts with Fe, before the reaction, there are a little Ag and NaCl impurities in the solution (neither of these two substances reacts with CuCl2 and Fe), then after the reaction, the substances on the filter paper have Ag that cannot react in addition to the above-mentioned analyzed substances; In addition to the substances analyzed above, there are also NaCl. that cannot accompany the reaction

Filtration: Filtration is a method of separating insoluble solids or undissolved solids from liquids. [Filter: filter paper + funnel].

The instruments used for filtration include iron racks or funnel holders, beakers, funnels, and glass rods. [The last three are all glass instruments].

Precautions for operation: The filtration requirements are "one stick, two low, and three leaning", that is, the filter paper should be close to the inner wall of the funnel, leaving no bubbles [expanding the contact surface and speeding up the filtration speed]; The edge of the filter paper should be lower than the edge of the funnel, and the liquid level should be lower than the edge of the filter paper [to prevent the mixture from being left directly without filtration, resulting in turbidity of the filtrate]; The beaker rests lightly against the glass rod (middle and lower part), the glass rod rests lightly on one side of the three-layer filter paper [to avoid damaging the filter paper], and the tip of the funnel rests lightly against the inner wall of the beaker [to prevent the filtrate from splashing; Speed up filtration]. The role of the glass rod in the filtration operation is to drain the water.

In this way, all liquids can be filtered, preventing some of the liquid from flowing directly into the filtrate without the filter paper.

The production process of the filter hole digging is to fold the filter paper in half into a semicircle, and then fold it into a quarter lead bridge circle to make a cone, and the liquid level is lower than the edge of the filter paper during filtration, so the distribution of insoluble matter on the filter paper is smaller than the semicircle of the filter paper

Therefore, a