43results about How to "Moderate alkalinity" patented technology

The invention relates to a desulfurization gypsum basic steel slag composite gelled material and a preparation method thereof. The desulfurization gypsum basic steel slag composite gelled material comprises the following raw materials by weight percentage: 65-95 of desulfurization gypsum, 5-35 of steel slag and an exciting agent of 0.1-5 of the total weight of the desulfurization gypsum and the steel slag, wherein the summation of the weight percentages of the desulfurization gypsum and the steel slag is 100 percent. The preparation method of the composite gelled material comprises the following steps: sifting the steel slag and the desulfurization gypsum for filtering out large grains and pouring the steel slag and the desulfurization gypsum into a material mixing pot for mixing for 20-30 minutes; gauging a standard consistency water consumption of water and pouring the water into an agitator kettle for standby; then weighing the exciting agent, adding the exciting agent to the mixture of the desulfurization gypsum and the steel slag by a first mixing method or a simultaneous mixing method and uniformly mixing the mixture; and agitating, molding and maintaining the mixed materials to obtain the composite gelled material. The method combines two industrial wastes so as to sufficiently improve the utilization rate of the steel slag and the desulfurization gypsum, change the wastes into valuables and also form the gypsum material with good heat preservation, heat insulation and sound insulation performance.

The invention relates to a covering powder material, in particular to an anti-bonding bleed-out continuous casting covering slag. The components of the anti-bonding bleed-out continuous casting covering slag in weight percent are as follow: 2-8% of Al2O3, 2-7% of F, 4-8% of Na2O, less than 4% of Li2O, 2-15% of B2O3, 0.7-3% of C, less than 3% of impurities carried in by raw materials, and balance of CaO and SiO2 with the weight ratio of CaO / SiO2 being 0.5-0.8. The properties of the covering slag are as follows: solidification temperature is less then 980 DEG C, viscosity at 1300 DEG C is 0.2-0.5Pa.s, and no crystal is precipitated during solidification. The usabilities of the covering slag are as follows: consumption rate is larger than or equal to 0.4kg / t steel, and the thickness of melt slag layer is 10-16mm. The anti-bonding bleed-out continuous casting covering slag in the invention can prevent the phenomenon of bonding bleed-out, improve operation rate of continuous casting machine, and reduce cost and accidents.

The invention discloses a deplating solution and a deplating process for removing glass NCVM film, and relates to the technical field of glass deplating. The deplating solution includes the following components in terms of mass percentage: soluble carbonate 10-30% , complexing agent 5-15%, penetrating agent 1-5%, and the rest is water. The stripping process uses the above-mentioned stripping solution to strip the NCVM film layer of the glass product. The invention alleviates the technical problems that the strong alkaline deplating solution traditionally used for the stripping of the NCVM film easily causes damage to the photosensitive ink after exposure and development, and the product yield is low. The stripping solution of the present invention uses soluble carbonate as the main stripping agent, and by cooperating with complexing agent and penetrant, not only can strip NCVM film cleanly, the stripping effect is good, and it will not affect the exposure and development The final photosensitive ink will cause damage, and the glass products after deplating using this deplating solution have good appearance and high yield.

The invention relates to a planted concrete material prepared by wet grinding potassium feldspar and phosphorus tailings and a preparation method thereof. The planted concrete material is composed of the following components in parts by weight: 22-33 parts of coarse aggregate, 5.3-7.154 parts of cement, 1.378-1.86 parts of water, 0.0159-0.0214 parts of polycarboxylate water reducing agent, 0.795-1.323 parts of wet-milled phosphorus tailings powder, 0.795-1.323 parts of wet-milled potassium feldspar powder, and 1.1528-1.3675 parts of 3 wt% oxalic acid solution. In the present invention, phosphorus tailings and potassium feldspar are mixed into the cementitious material after wet grinding, which can improve the mechanical properties of the cementitious material in the later stage; Dissolution K + , P + , in order to play the role of slow-release fertilizer, so as to continuously provide necessary mineral elements for the growth of plants; in the later stage, the pH value of the system is effectively reduced by acid spraying and alkali reduction, which provides good growth conditions for plants, which is conducive to improving the performance of planted concrete materials. comprehensive performance.