2results about How to "Reduce insoluble content" patented technology

The invention discloses a method for preparing an iron salt water purifying agent by using iron-containing waste acid, which comprises the following steps: mixing the iron-containing waste acid with an additional acid solution to obtain an iron salt raw material; then the ferric salt raw material and oxygen are subjected to a continuous flow reaction, and a ferric salt water purifying agent is obtained; the mass fraction of hydrogen ions in the ferric salt raw material in terms of hydrogen chloride is 4.8-8.5%; in the continuous flow reaction, the conveying flow rate of the ferric salt raw material is 500-2000kg / h, and the ratio of the conveying flow rate of the ferric salt raw material to the conveying flow rate of oxygen is 1000: (10-20); the temperature of the continuous flow reaction is 100-165 DEG C, and the pressure of the continuous flow reaction is 1.25-2 MPa. According to the invention, oxygen is taken as an oxidizing agent, the mass fraction of hydrogen ions in the ferric salt raw material is controlled in a specific range, the conveying flow rate of the ferric salt raw material is controlled in a specific range, and the pressure of continuous flow reaction is controlled in a specific range, so that the prepared ferric salt water purifying agent is high in Fe < 3 + > ion content; the content of free acid is low, and the content of insoluble substances is low.

The invention relates to a divisional application of a Chinese invention patent application with an application number of 202311209611. 2, an application date of September 19, 2023, and an invention name of a bio-organic fertilizer produced by using sugar industry byproducts and a preparation method thereof. The invention discloses an application of a bio-organic fertilizer produced by using by-products in the sugar industry in improvement of tomato yield and / or quality, and belongs to the technical field of bio-organic fertilizers. The invention provides an application of a bio-organic fertilizer produced by using by-products in the sugar industry in improvement of tomato yield and / or quality. The bio-organic fertilizer produced by utilizing the by-product of the sugar industry is prepared from the following components in parts by mass: 30 to 40 parts of water-soluble calcium humate, 20 to 35 parts of filter mud fermentation product, 15 to 25 parts of magnesium nitrate hexahydrate, 0.4 to 1 part of boric acid, 0.4 to 1 part of zinc sulfate, 1 to 2 parts of sodium molybdate, 1 to 2 parts of amino acid, 1 to 2 parts of dioctyl sodium sulfosuccinate, 0.5 to 1 part of D-glucuronic acid and 1 to 2 parts of sodium polyacrylate. The yield, quality and appearance of the tomatoes can be improved to different degrees by respectively spraying the bio-organic fertilizer in the early flowering stage, the fruit swelling stage and the color changing stage of the tomatoes.