Do any of you who are in the marine industry have any information on polyaluminum chloride?

I’m looking for the same thing too. If you have any relevant materials, please send them to my email address: 396304334@qq.com

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If I have any, I’ll take them out and share them with everyone

It would be even better if a process flow diagram could be attached, for use in safety assessments, and also to help with personal learning!* Thank you

It seems to be mineral products that have been directly crushed and then separated by air separation! It’s not synthesized using chlorine, right? Basically, the PAC available on the market comes in two types: one with a 28% concentration and another with a 31% concentration, and both are produced in Gongyi, Henan. It seems Jiaozuo has it too. ————————————————So far, there is no news of any chlor-alkali-related company producing this product! ———————— The general term is: abbreviated as polyaluminum, also known as polymerized aluminum; its English name is PAC. Aluminum polychloride hydroxide and iron polychloride aluminum also belong to inorganic water purification agents. It is a cationic inorganic polymer flocculant that consists of polyhydroxy, polynuclear complexes. The solid form appears as a yellow powder; its chemical formula is M·(where 1≤n≤5 and m≤10). It is soluble in water and possesses strong bridging and adsorptive properties. During the hydrolysis process, physicochemical changes such as electrochemistry, coagulation, adsorption, and precipitation occur, ultimately leading to purification. Product category: 1. Aluminum chloride polymerized by drum drying. Aluminum chloride polymerized by drum drying is further divided into: (1) Aluminum chloride polymerized through natural sedimentation – as the name suggests, this method relies on natural sedimentation processes in the primary and secondary sedimentation tanks, without any artificial intervention. (2) Plate and frame filter-type polyaluminum chloride – This process uses a plate and frame filter for filtration, resulting in polyaluminum chloride with parameters that are superior to those of the naturally precipitated version. 2. Spray-dried polyaluminum chloride: The characteristics of pressure spray drying are mainly determined by the working principle of pressure atomizers, which gives this drying system its own distinct features. Since the products obtained by pressure spray drying are porous granular or hollow granular in form, this method is primarily used to produce granular products, which exhibit excellent dust-proof properties and flow characteristics. Due to the large contact area between the product and water, its wetting performance is better than that of powdered products, and the speed at which water is purified is significantly higher than with powdered products. Products obtained through pressure spray drying have unique characteristics. Key advantages: Compared to other coagulants, polyaluminum chloride offers the following benefits: it has a wide range of applications and is suitable for various types of water. It can quickly form large floccules, with good sedimentation properties. The suitable pH range is wide (between 5 and 9), and the pH and alkalinity of the water decrease only slightly after treatment. A stable sedimentation effect can still be maintained at low water temperatures. Its alkalinity is higher than that of other aluminum and iron salts, resulting in less erosion of equipment. Physical and chemical properties: This product is an inorganic polymer coagulant. It primarily achieves purification by compressing the dual-layer structure, and through mechanisms such as adsorptive electro-neutralization, adsorptive bridging, and precipitation trapping, it destabilizes the fine suspended particles and colloidal ions, causing them to aggregate, flocculate, coagulate, and precipitate.

The main raw materials used by the manufacturer I’m presenting about are aluminum hydroxide and hydrochloric acid, and the product is manufactured through a polymerization reaction. Does the gentleman above have any materials on this topic? The operating conditions mentioned above, as well as the additional materials added, all need to be included in the report. Is there any flowchart available for reference regarding this process?

Polyaluminum chloride 1. Introduction Polyaluminum chloride is an inorganic polymer coagulant; it is a polymeric compound resulting from the hydrolysis of aluminum salts. It possesses excellent bridging and adsorption properties, making it suitable for wastewater treatment in various industries. 2. Physical and chemical parameters: Mass fraction of alumina (Al2O3): Solid: ≥27.0% ； Liquid: ≥10.0% Alkalinity: 40–90 pH (1% aqueous solution): 3.5–5.0 Mass fraction of water-insoluble substances: ≤1.5% 3. Applications and functions: It features fast reaction speed, large floc formation, rapid solidification, good filtration properties, and strong bridging and adsorption capabilities ； It has a wide suitable pH range; good coagulation effects can be achieved at pH values between 4 and 10 ； It has a wide range of dosing levels; excessive dosing does not easily lead to deterioration ； Low dosage required, low corrosivity to equipment, minimal residue of chemicals ； In cold seasons, it has little impact on the coagulation effect, and it can achieve good results for both high-turbidity and low-turbidity water. It is suitable for the treatment of oilfield wastewater, oily wastewater from refineries, drinking water, and domestic sewage. 4. Usage and dosage: This product can be used as is or diluted to an Al2O3 content of 2-5% before use. For drinking water, a recommended dosage is 3-10 mg/l; for water with high turbidity, the dosage can be increased to 30-80 mg/l. For wastewater treatment, the dosage is 50-200 mg/l. Users can also adjust the optimal usage amount based on water quality conditions. 5. Product packaging: This liquid product is packaged in barrels of 25 kg each or transported in tank trucks; it can also be packaged differently according to the customer’s requirements. The solid is packaged in 25kg composite woven bags. Store in a cool place; shelf life is twelve months.

I learned a great deal from the teacher’s explanation; thank you for sharing it

The process for producing polyaluminum chloride is quite simple; the key is to have access to suitable raw materials. Bauxite, aluminum-calcium powder, aluminum hydroxide, and waste aluminum slag can all be used to manufacture polyaluminum chloride. Bauxite needs to be roasted before use, while aluminum hydroxide results in high production costs.

Brother’s experience is really useful! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !