Differences between various magnesium chloride hexahydrate flakes

Among magnesium chloride hexahydrate products, 46% magnesium chloride flakes are relatively popular. Many factories manufacture this kind of magnesium chloride flakes. Owing to low production costs and a variety of production processes, they have high overall costeffectiveness.

I. What different production processes are used by numerous magnesium chloride flakes factories for the abovementioned magnesium chloride hexahydrate products?

1. Ordinary bittern concentration process (ordinary bittern flakes) Raw materials: waste bittern generated as a byproduct of solar salt production, potassium extraction and bromine extraction. The bittern is simply evaporated and concentrated to remove part of sodium salts, then cooled and made into flakes by a drum flaker.

2. Deep bittern refining process (white bittern flakes) The raw bittern is first oxidized for iron removal, treated with activated carbon to eliminate organic matter and purified by recrystallization before concentration and flaking.

3. Neutralization reaction of highpurity magnesium oxide and hydrochloric acid, multistage fine filtration, lowtemperature concentration and crystallization for flaking. No natural brine is adopted as raw material.

4. Byproduct route: magnesium chloride produced by reprocessing waste residues left over from the manufacture of potassium nitrate, pharmaceutical intermediates and other products.

As Yuze, a magnesium chloride supplier, we mainly sell highpurity acidsynthesized magnesium chloride and deeply refined bittern flakes. The two main products are described below.

1. Acidsynthesized white magnesium chloride flakes It is produced through the neutralization reaction of magnesium oxide and hydrochloric acid, multistage fine filtration, lowtemperature concentration and crystallization for flaking. The raw materials contain no natural saltlake organic substances or silt. Impurities including iron, sulfates and heavy metals are controlled from the source. The finished products are crystal brightwhite flakes with MgCl₂ content above 46%. Each batch has stable indicators. They dissolve into clear aqueous solution with a small quantity of flocs. This is the mainstream product of our magnesium chloride flakes factory. Its main advantages are high purity, extremely low content of sulfates, sodiumpotassium salts and heavy metals, uniform whiteness, tiny color difference, fast dissolution speed, clear solution and low tendency to cake.

2. Bitternprocessed magnesium chloride (conventional bittern flakes) It is a byproduct of the salt chemical industry, manufactured from seasalt bittern or saltlake brine by evaporation, concentration and crystallization. Ordinary bittern flakes are pale yellow or tan. The yellow color does not come from magnesium chloride itself; it is caused by ferric iron colloids, humus organic matter and ultrafine suspended silt in raw brine. It contains high sulfates and sodium chloride. The composition of brine changes with seasons, leading to obvious color difference of finished flakes. White flakes can also be made via deep bittern refining. Iron and organic matter are removed by oxidation, activated carbon adsorption and recrystallization. Only colorcausing impurities are eliminated. The solid flakes look white, but some turn slightly turbid after dissolving in water. Several years ago, this was our flagship product at Yuze, a magnesium chloride supplier. We supply two grades of this product. One is the abovementioned grade, and the other is of far higher quality. Due to its superior quality, it is only available for customers with extremely strict requirements, and the output is relatively low. It contains almost no impurities, dissolves into clearer water and meets EU certification standards in all indicators. Detailed test reports and parameters cannot be displayed publicly.

II. Comparison of 46% magnesium chloride flakes

46% magnesium chloride flakes are the commonly used type among magnesium chloride hexahydrate, so we compare 46% magnesium chloride flakes from two different processes.

1. Acidsynthesized 46% white magnesium chloride flakes Suitable for feed additives, aquaculture seedling breeding, highgrade magnesia building materials, highend export orders, desiccants and fine chemicals. Low impurities effectively reduce moisture bleeding and efflorescence of magnesia products. It is the first choice for highquality projects.

2. Ordinary brineprocessed 46% bittern flakes It features outstanding costperformance and is widely used for road deicing, dust suppression on construction sites, ordinary magnesia cement, basic magnesium fertilizer and sewage treatment. Disadvantages: large fluctuation of impurities. Not recommended for feed, aquaculture seedling breeding and other demanding scenarios.

3. Deeprefined brine 46% bittern flakes A compromise option. They are white in appearance and preferred for export orders with limited budget and strict sulfatefree requirements.

As a professional magnesium chloride flakes factory, we can supply acidsynthesized white flakes, deeprefined brine white flakes and traditional yellow bittern flakes. We stably provide 46% magnesium chloride flakes. Samples, customized packaging and export orders are supported. Magnesium chloride suppliers, foreign trade merchants and enduser factories are welcome to contact us for cooperation.