8 results about "Mass concentration ratio" patented technology

The application discloses a substation oil-filled equipment live extinguishing medium, and the mass concentration ratio of raw materials of the extinguishing medium is as follows: 5-35% of ethylene glycol, 5-20% of non-ionic foaming emulsifier, 3-8% of ethylene glycol butyl ether, 2-5% of non-ionic film-forming spreading agent, 0.2-0.6% of xanthan gum, 0.15-0.5% of non-ionic organic corrosion inhibitor and 0.5-1.5% of metal chelating agent, and the rest is deionized water with conductivity lower than 10 mu s / cm. The product formula uses non-ionic raw materials, and after being mixed with water in a proportion, the conductivity is lower than 200 mu s / cm. The conductivity of the extinguishing agent is prevented from being improved under long-term storage by adding a corrosion inhibitor / chelating agent compound, and the extinguishing agent can be used in combination with a water quality monitoring and processing device to realize spraying and extinguishing for live equipment within the effective period of the extinguishing agent. The extinguishing medium uses a new type of fluorosilicon / fluoroether structure film-forming agent, which can be naturally degraded in the environment on the basis of ensuring hydrophobicity, oleophobicity, film forming and spreading. Meanwhile, by adding a new type of high-efficiency cooling and emulsifying aid, the ability of the product to quickly extinguish and prevent re-ignition is ensured.

A method for recycling silver from a waste IC chip include: heating to disassemble an IC chip, and crushing the IC chip into powders; adding the powders to a nitric acid solution, heating, centrifuging and collecting a first filtrate; adding soluble starch to the first filtrate, where a mass concentration ratio of the soluble starch to Fe in the first filtrate is 5.20-7.30; heating a resulting mixture to 130-175° C. for a first hydrothermal reaction, separating a precipitate from the first hydrothermal reaction and collecting a second filtrate; heating the second filtrate to 160-230° C. for a second hydrothermal reaction, separating a solid from the second hydrothermal reaction and collecting a third filtrate; drying, grinding, and sieving the solid to obtain silver powders; and adding alkali to the third filtrate to form a precipitate of Cu, and separating the precipitate to yield copper hydroxide.

The application discloses a culture medium and a process method for reducing cell lactic acid accumulation, which is based on a cell basic culture medium, and after removing original copper ion compounds and DTPA, nitrilotriacetic acid, citric acid and histidine in the basic culture medium, contains the following components and concentration ranges: copper chloride 0.2-0.5 mg / L, copper nitrate 0.2-0.5 mg / L, copper sulfate 0.2-0.5 mg / L, diethylene triamine pentaacetic acid 1-5 mg / L, nitrilotriacetic acid 1-5 mg / L, citric acid 1-5 mg / L, and histidine 0.5-3 g / L; the mass concentration ratio of the copper chloride, the copper nitrate and the copper sulfate is 1:1-5:1. Compared with the prior art, the application has the advantages that: compared with the prior art, the culture medium of the application can inhibit lactic acid generation and promote lactic acid oxidation and decomposition through the synergistic effect of copper ions, chelating agents and metabolism-related substances, and the effect of reducing lactic acid accumulation is remarkable.

The application discloses a polyvinyl butyral film with high impact resistance and penetration resistance, and a preparation method and application thereof. The film comprises, by weight, 100 parts of polyvinyl butyral resin, 30-45 parts of plasticizer, 40-100 ppm of at least one alkali metal ion (A + ), and 10-50 ppm of at least one divalent metal ion (M 2+ ), and the mass concentration ratio of M 2+ to A + is 1:2.5-1:4.0. The film comprises the following preparation steps: one, batching; two, preparation of an additive mother liquor; and three, melt blending and extrusion. Through the synergistic effect of the metal ions in the specific combination and proportion, the impact resistance, penetration resistance and lamination processing performance of the laminated glass are significantly improved, and meanwhile, excellent optical performance is maintained; the preparation process is compatible with the existing production line, and is easy to realize large-scale production.

A molten plated steel material having a steel material and a plating layer disposed on the surface of the steel material, the plating layer having a prescribed chemical composition and a thickness of 5.0 [mu] m or more, the surface of the plating layer being provided with a region A and a region B, the region B having a thickness of 0.02 [mu] m or more formed with a black oxide layer containing a Zn oxide, and the region B having a thickness of 0.02 [mu] m or more. When PA is the mass concentration ratio (O / Zn) of O and Zn in the region (A) of the surface of the plating layer and PB is the mass concentration ratio (O / Zn) of O and Zn in the region (B) of the surface of the plating layer, the following formulae (1)-(3) are satisfied. 0 lt; palt; 0.80... (1) 0.80 < = PB... (2) 0.40 < = PB-PA... (3)

This invention discloses a method for removing metal and heavy metal ions from wet-process phosphoric acid, comprising the following steps: S1, adding a reducing agent to wet-process phosphoric acid with a P2O5 mass concentration of 14-43% to obtain mixture 1; S2, adjusting the mass concentration ratio of Mg to Na in mixture 1 to 3-10, the mass concentration ratio of Al to Na to 1 to 1-9, the mass concentration ratio of Mg to K to 5-18, and the mass concentration ratio of Al to K to 3-17 to obtain mixture 2; S3, adding a calcium-containing inorganic substance to mixture 2 to obtain mixture 3; S4, adding a precipitant to mixture 3, followed by filtration and washing. This method can effectively remove metal and heavy metal impurities such as sodium, potassium, calcium, and chromium simultaneously, with a low phosphorus loss rate and a phosphorus recovery rate of over 99.3%.

The invention discloses a gold ore prospecting prediction method based on the Hg-W ratio of pyrite, and the method comprises the steps: recognizing an internal annulus structure of pyrite through a scanning electron microscope back scattering electron imaging technology, and locking a growth edge annulus representing a main metallogenic period; performing in-situ trace element content testing on the edge girdle by adopting a laser ablation inductively coupled mass spectrometer to obtain mass concentrations of mercury and tungsten; calculating the mass concentration ratio R of mercury to tungsten in the edge annulus, and drawing an Hg-W logarithmic scatter diagram; the smaller the R value in the Hg-W logarithmic scatter diagram is, the closer the R value is to the root of the mineralization system, otherwise, the closer the R value is to the shallow part of the mineralization system. According to the method, the superimposed interference of multi-stage signals in the non-mineralization stage is effectively eliminated, and a quantitative discrimination index is established by using the geochemical differentiation law of Hg and W in fluid evolution. The method has the advantages of being high in spatial resolution, accurate in prospecting information, reliable in denudation degree evaluation and the like, and a scientific basis can be provided for accurate positioning of the deep concealed gold mine.

The application discloses a neodymium-iron-boron magnet and a preparation method and application thereof. The neodymium-iron-boron magnet comprises a first easy demagnetization area, a first transition area, a non-easy demagnetization area, a second transition area and a second easy demagnetization area which are sequentially distributed along a direction perpendicular to an orientation direction; the first easy demagnetization area, the second easy demagnetization area, the non-easy demagnetization area, the first transition area and the second transition area are all rectangular; the HRE mass concentration of the first easy demagnetization area is the same as that of the second easy demagnetization area; the HRE mass concentration of the first transition area is the same as that of the second transition area; the HRE mass concentration ratio of the non-easy demagnetization area to the first easy demagnetization area is (0.3-0.95):1; the HRE mass concentration ratio of the first transition area to the first easy demagnetization area is (0.9-1):1; wherein, HRE is Dy or Tb. The magnet can improve the anti-demagnetization capacity of the neodymium-iron-boron magnet under the premise of saving the HRE dosage through the cooperation of the HRE content between the easy demagnetization area, the transition area and the non-easy demagnetization area.