35results about How to "Prevent re-precipitation" patented technology

There are here disclosed a method for removing a titanium-based film from a honeycomb-molding die having on the surface of a base material coated with the titanium-based film, and a method for removing an oxide of titanium from a honeycomb-molding die having the oxide of titanium adhered / deposited on the surface of a base material. In each method, a removing solution comprising a mixture of an acid and hydrogen peroxide is used. According to the methods for removing the titanium-based film and the oxide of titanium, a large amount of the titanium-based film as well as the oxide of titanium adhered / deposited on the base material of a honeycomb-molding die can be removed by use of a small amount of the removing solution without corroding the base material of honeycomb-molding die while re-deposition of dissolved titanium ions on the base material is prevented.

A method of degassing a coating liquid, comprising the step of:irradiating the coating liquid with a plurality of ultrasonic waves of different frequency bands simultaneously to degass said coating liquid.

The invention discloses leather cleaning, nourishing and care cream, which comprises the following components in percentage by weight: 1 to 5 percent of molecular distilled monoglyceride, 1 to 5 percent of stearic acid, 8 to 15 percent of medical white vaseline, 1 to 5 percent of methyl phenyl polysiloxane, 2 to 6 percent of alcohol 16-18, 1 to 5 percent of coconut water oil-fatty acid-diethanol amide, 0.5 to 2.5 percent of lanolin, 0.2 to 1 percent of diazolidinyl urea, 0.2 to 1 percent of plant essence, 0.2 to 1 percent of aloe liquid, 0.5 to 3 percent of vegetable wax, 0.1 to 0.5 percent of natural zeolite, and 50 to 85 percent of deionized water. The invention also provides a production method for the cream. The cream integrates maintenance and care into a whole, is environment-friendly, has the properties of cleaning and polishing leather and resisting water, cracking, mildew and bacteria, is safe, healthy and natural, does not contain paraffin, is not greasy or sticky, keeps the natural color of the leather, is anti-fouling and clean, and is applied widely.

The invention discloses a quick descaling antiseptic and environment-friendly descaling agent and its preparation method and application. The descaling agent comprises the following raw materials in parts by weight: 3-40 parts of oxalic acid; 2-20 parts of citric acid; 3-20 parts of malic acid 25 parts; 2-12 parts of tannic acid; 2-15 parts of sodium polyacrylate; 0.05-1 part of dispersant; 10-40 parts of preservative; 50-200 parts of deionized water. The preparation method of the descaling agent is as follows: S1 oxalic acid, citric acid, tannic acid and malic acid are crushed and sieved; S2 is mixed with the mixture of S1 and deionized water to obtain solution A; S3 is added sodium polyacrylate to solution A, Heat and cool to obtain solution B; S4 Add preservative and dispersant to solution B, and mix well. The descaling agent of the invention can be used for descaling of central air-conditioning cooling towers, water treatment pipelines, boilers, etc., and has the advantages of low environmental pollution, high descaling efficiency and certain sterilization rate.

The invention discloses a dredging device for water environment treatment, which comprises a dredging box, a water outlet, a filter screen, a collection tank, an electric valve, a cleaning motor, a screw rod, a connecting bearing, a slider and a cleaning brush. The top of the silt tank is provided with a water outlet, and a filter screen is installed inside the water outlet, and a collection tank is provided on both sides of the dredging tank, and an electric valve is installed on one side of the collection tank. The structure of the present invention is scientific and reasonable. , It is safe and convenient to use. When the turbid water passes through the filter, the filter will allow the water in the turbid water to pass through, while the silt and debris will be blocked by it, so as to prevent the turbid water from flowing into the water flow. , which will lead to poor water quality; the cleaning brush will sweep the silt and debris filtered out of the filter into the collection tank, so as to prevent the silt and debris from re-settling to the river bottom after the water flow is still.

The invention discloses a heat treatment method for Al-Cu-Li alloy pre-aging, re-solution and re-aging, which belongs to the field of material heat treatment. Starting from controlling the heat treatment process system and its parameters, the Al-Cu-Li alloy extruded plate is conventionally Solution, pre-aging, heavy solution and re-aging treatments. The conventional solid solution and heavy solution treatment temperature is 515±10°C, heat preservation for 60-90 minutes, and then water quenching, and the quenching transfer time is <5s. The temperature for pre-aging and re-aging treatment is 160-180°C, keep warm for 24-48 hours, and air-cool after taking it out. Re-solution treatment can reduce the strength of the alloy, improve the plasticity of the alloy, and is beneficial to the orthopedic and reprocessing processes; re-aging treatment can effectively control the type, density and distribution of precipitates, and improve the strength of the alloy. Coupled with the coarsening of discontinuous grain boundary precipitates and the increase of copper content in the alloy, the performance of stress corrosion resistance, intergranular corrosion and electrochemical corrosion is improved under the premise of maintaining the strength of the alloy. Increased plasticity. The process is simple and easy and is not limited by the thickness of the plate.

The invention relates to the technical field of daily chemical soap, in particular to a soap particle containing organic sodium gluconate and an environmentally friendly soap. The soap particles include the following raw materials in weight percentage: 60-80 parts of mixed fatty acid, 27-38 parts of liquid alkali, 2-10 parts of refined glycerin, 0.2-1.5 parts of metal chelating agent, 0.5-1.0 part of refined salt and 4.5 parts of deionized water ‑6.5 parts; the metal chelating agent is organic sodium gluconate, or a mixture of organic sodium gluconate, iminodisuccinic acid and sodium dimaspartate. The soap particles of the present invention use organic sodium gluconate as the main chelating agent, which can still chelate heavy metal ions in water and dirt under relatively high pH conditions, and avoid oxidation, deterioration and peculiar smell of the soap particles caused by metal ions, Moreover, the organic sodium gluconate has the environmental protection characteristics of easy biodegradation, which improves the environmental friendliness of the soap particles, and the soap particles have the characteristics of good decontamination effect, no irritation to human skin, and high safety.

The invention discloses a method for stabilizing a leaching solution in a calcification vanadium extraction process and relates to the technical field of vanadium oxide extraction. The method solves the problem that in the leaching solution standing process in a calcification vanadium extraction process, part of vanadium is precipitated out, and the vanadium loss is caused. According to the technical scheme, the initial pH value of the leaching solution is detected firstly, a stabilizer is added to the leaching solution, and the pH value of the leaching solution is adjusted to range from 2.5 to 4.0; when the initial pH value of the leaching solution is larger than 4.0, the stabilizer is organic strong acid or a mixed solution of the organic strong acid; when the initial pH value of the leaching solution is smaller than 2.5, the stabilizer is soluble alkali or a mixed solution of the soluble alkali; and then liquid-solid separation is conducted on the leaching solution with the adjusted pH value, and filter residues and the qualified leaching solution are obtained. According to the method, the pH value of the leaching solution in the calcification vanadium extraction process is adjusted to range from 2.5 to 4.0 by selecting different stabilizers, high-concentration vanadate ions and NH4<+>, or H<+> or Mn<2+> in the leaching solution are prevented from generating vanadium precipitation under the induction of suspended matter with fine particles, the leaching solution is stabilized, the problem that leached vanadium precipitates again in calcification clinker is avoided, and the recycling rate of vanadium is guaranteed.

The invention discloses an industrial wastewater treatment device. The industrial wastewater treatment device comprises a wastewater pool, a discharging pipe, a soft thorn collecting mechanism, a settling tank, a ventilation pipe, a valve and a negative pressure pump, wherein the discharging pipe is arranged on the side of the top end of the wastewater pool; one end of the discharging pipe is communicated with the wastewater pool; the other end of the discharging pipe is communicated with the soft thorn collecting mechanism positioned at the diagonal lower part; the setting tank is arranged onthe other side, opposite to the discharging pope, of the soft thorn collecting mechanism and is mechanically connected with the soft thorn collecting mechanism; the mounting position of the setting tank is lower than the soft thorn collecting mechanism; the setting tank is mechanically connected with the negative pressure pump through a ventilation pipe; the valve is arranged at the middle position of the ventilation pipe. According to the industrial wastewater treatment device disclosed by the invention, bubbles bonded with staple fibers are automatically collected and pierced, the stable fibers are bonded in large area and fishing for multiple times is avoided, so that labor intensity is reduced.