Why does limescale form? What are some ways to remove limescale? What are the main components of lim

In nature, water containing minerals such as calcium, magnesium, salt, etc., is called "hard water". For example, the tap water we drink daily is a kind of hard water, which is obtained by precipitating well water and river water, removing sediment, and sterilizing. During the boiling process, some of the water evaporates, leaving behind insoluble calcium sulfate.

On the other hand, when water boils, calcium bicarbonate and magnesium bicarbonate, which would otherwise be dissolved, decompose in it, releasing carbon dioxide, which becomes insoluble calcium carbonate and magnesium carbonate, which precipitates to form scale. The water quality in northern China is harder than in the south, so the content of these substances will be higher.

1.Lemon scales: Prepare a lemon, chop it, then place it in a kettle and bring it to a boil with water. Let it soak in boiling water for a while and then pour it all out so that the limescale in the kettle is easily removed.

2.Descaling with vinegar: this method is the simplest and most practical.

The main component of limescale is carbonates such as calcium carbonate, and the acetic acid in vinegar reacts with it to form water-soluble substances, minerals, and carbon dioxide gas. White vinegar is generally available in supermarkets. Add 10% white vinegar to the pot scale, then fill with water and cook for an hour or so before brushing.

Aged vinegar is also fine, but the effect of aged vinegar is not as good as that of white vinegar.

3.Boiled egg descaling: Generally, the electric kettle has been used for a long time, and the scale is difficult to remove.

If you want to descale, just boil a few eggs in the kettle every morning, because the composition of the egg shell contains calcium carbonate, which has a chemical reaction with the ingredients in the scale, so that the descaling is much easier, and it will fall off after wiping.

4.Baking soda to remove limescale: Baking soda is also used to scale electric kettles.

Generally, the heating plate of an electric kettle is made of aluminum. When the electric kettle boils water, it is easy to form scale. Generally, we can put 1 teaspoon of baking soda and cook it for a few minutes, and the limescale will be removed.

Or you can pour about 500 grams of baking soda with a concentration of 1% and shake gently to remove limescale.

5.Sweet potato scales: After the kettle is bought, put the sweet potatoes into the new kettle, put about half a pot of sweet potatoes, and then fill it with water and boil.

In this way, boiling water in the future will not produce scale, saving trouble and effort. However, it should be noted that the inner wall of the kettle after the sweet potato is boiled should not be cleaned, which will lose the descaling effect.

The composition of limescale is complex and is a mixture, depending on the scale is formed in **. If it is formed at high temperatures, it is mainly carbonate of calcium and magnesium ions, or silicate or sulfate of calcium and magnesium ions. If it is formed at room temperature, it may be accompanied by organic microbial algae.

Scale, commonly known as "rust and alkali", refers to the white lump or powdery substance gradually formed by the mineral contained in hard water after boiling in a container (such as pot, pot, etc.). The main components of scale are calcium carbonate, magnesium hydroxide, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, etc. The thermal conductivity of scale is very poor, if the scale formed in the boiler is too thick, it will lead to a decrease in the efficiency of the boiler, and in the worst case, it will cause the boiler to burst and cause a boiler accident.

Methods of scale removal: 1. Lemon scale removal. Put the lemon slices in a kettle (the thinner the better, the purpose is to release the citric acid as much as possible), boil the water for about 5 minutes, and let the lemon soak in the water for 2 minutes after boiling.

2. Vinegar to remove scale. If the kettle has scale, you can put a few spoonfuls of vinegar into the water and boil for an hour or two to remove the scale. If the main ingredient in the scale is calcium sulfate, the soda ash solution can be poured into the kettle and boiled to remove the scale.

3. Ion exchange scale removal method. By using a specific cation exchange resin to replace calcium and magnesium ions in the water with sodium ions, the solubility of sodium salts is high, so the formation of limescale due to the increase in temperature is avoided. 4. Limescale cleaner removes scale.

The main ingredient of limescale cleaner is hydroxymalonic acid, which is safe, non-toxic and environmentally friendly. This limescale cleaner is easy to use and effective, with the right dosage and detailed instructions, making it suitable for home use.

It is because of the calcium carbonate and other components formed in the process of evaporation of water; You can use white vinegar to remove limescale; The main components of limescale are magnesium hydroxide, magnesium carbonate, calcium carbonate, magnesium sulfate.

Calcium carbonate and magnesium carbonate will be precipitated from the water and adhere to the inner surface of the kettle to form scale. Baking soda removal: Add water to a boil or soak for 10 minutes. The main ingredients are calcium carbonate and magnesium hydroxide, and may also contain some magnesium bicarbonate.

Scale is commonly known as "water rust, water alkali", and the main components are calcium carbonate, magnesium hydroxide, magnesium carbonate, calcium sulfate, magnesium sulfate, calcium chloride, magnesium chloride, etc.

Scale is a white lump or powder substance that gradually forms when the minerals contained in hard water are boiled and adhered to the container. Scale is classified according to chemical composition, which can be divided into carbonate scale, sulfate scale, silicate scale and mixed scale. Limescale has poor thermal conductivity and can lead to worsening heat transfer on the heating surface, wasting fuel or electricity.

If scale adheres to the heating surface of the thermal equipment, it will endanger the safe and economical operation of the thermal equipment. When limescale fragments enter the stomach, they react with hydrochloric acid, releasing calcium and magnesium ions, which are necessary for stone formation, and carbon dioxide.

To remove scale, it can be removed with baking soda, lemon, vinegar, ion exchange, membrane separation, scale remover, etc.

The main components of scale are calcium carbonate, magnesium carbonate, magnesium hydroxide, calcium chloride, magnesium sulfate, calcium sulfate, magnesium chloride and so on. Scale, commonly known as "rust" and "water alkali", usually refers to the white lump or powdery substance that is gradually formed by the minerals contained in hard water after being boiled and attached to pots, pots and other containers.

The thermal conductivity of scale is very poor, and when scale adheres to the inner wall of the boiling appliance, it will weaken the heat transfer performance of the heating surface of the container, resulting in waste of fuel or electricity.

If limescale adheres to the heating surface of the furnace tube, it will jeopardize the safe operation of the furnace tube. When the scale prevents the furnace tube from transferring heat to the water, the cooling of the furnace tube will be affected, resulting in an increase in wall temperature and bulging of the furnace tube, which will eventually cause a burst pipe.

Summary. Hello, the question received by the teacher is: how to remove the limescale forming components from the water:

The first way to remove limescale from water is to use vinegar. White vinegar and vinegar can be used, about 10% of the scale of the kettle can be added, then add water to boil and let stand for an hour, and finally the scale can be easily washed off.

The second is with baking soda. This operation is the same as the previous vinegar, except that the vinegar is replaced with baking soda. Generally speaking, adding a spoonful and boiling it can remove limescale, and the effect is often better than vinegar.

Can I still drink limescale water? The limescale components are calcium and magnesium, learn three tricks to get rid of the third with tea. The peculiarity of this trick is that you don't need to boil, put the tea dregs and rice into the kettle, and then shake it a few times, and finally leave it for a while and the scale will fall off on its own.

However, the effect tends to be weaker and needs to be done several times.

Please wait patiently for 1 minute, the teacher is sorting out the answers, and will answer them for you immediately, and please do not end the consultation<>

Hello dear, the question received by the teacher here is: how to remove the limescale-forming components in the water: how to remove the limescale-forming components in the water:

The first is with vinegar. White vinegar and vinegar can be used, about 10% of the scale of the kettle can be added, then add water to boil and let stand for an hour, and finally the scale can be easily washed off. The second is with baking soda.

This operation is the same as the previous vinegar, except that the vinegar is replaced with baking soda. Generally speaking, adding a spoonful and boiling it can remove limescale, and the effect is often better than vinegar. Can I still drink limescale water?

The limescale components are calcium and magnesium, learn three tricks to get rid of the third with tea. The peculiarity of this trick is that you don't need to boil, put the tea dregs and rice into the kettle, and then shake it a few times, and finally leave it for a while and the scale will fall off on its own. However, the effect tends to be weaker and needs to be done several times.

Dear, the above is all the teacher's answers, if you successfully solve your problem, please give the teacher a thumbs up (evaluation in the lower left corner) <

Scale is mainly formed by the precipitation of salts such as calcium and magnesium contained in boiler feed water after being heated and sticking to the metal surface. The thermal conductivity of scale is very small, about 2 5% of ordinary steel, and the scale is formed on the heating surface of the boiler, which will greatly deteriorate the heat transfer effect and affect the efficiency of the boiler; It is easy to burn out the metal material due to local overheating.

The main harm to the human body is that if people accidentally drink limescale fragments, they will enter the stomach and react with hydrochloric acid, which will release calcium and magnesium ions and carbon dioxide. Calcium and magnesium ions are necessary for the formation of stones; Carbon dioxide can make people bloated and uncomfortable; Patients with gastric ulcers may also be at risk of gastric perforation.

The water is constantly heated and evaporated and concentrated, resulting in an increase in the concentration of calcium and magnesium salts in the water, and when their concentrations are exceeded, they precipitate out of the water to form a precipitate.

1. It is mainly related to water quality. If the water quality is hard, the oxygen content in the water is insufficient, and the water molecules are unstable, the solubility of calcium and magnesium ions in the water will be reduced, and the precipitation will be intensified, resulting in the formation of scale. As long as the water temperature exceeds 60, especially in the north where the water quality is relatively hard, there will definitely be scale, and there will be scale in the daily kettle and boiler, and the solution is to clean it regularly.

2. The impact of scale on human health can not be ignored, scale is easy to cause gastrointestinal digestion and absorption disorders and constipation, so that the incidence of gastritis and various stones increases. Tartar and periodontitis are often caused by scale; It can kill people. So far, there is no vaccine to prevent the Legionnaires' disease, which is hiding in limescale.

3. And scale is insoluble in water is only relative, and some of the precipitate will dissolve after the water is heated, which will bring the heavy metal ions that form the precipitate back into the water, so that the content of heavy metal ions in the water exceeds the requirements of health standards, endangering human health, such as calcium carbonate and magnesium carbonate deposited in the human body in large quantities and easy to form stones.