76results about How to "The amount added is easy to control" patented technology

The invention discloses a cast aluminum alloy with high thermal conductivity, high strength and low Si and a preparation method thereof; the raw material components are: 2.5-4.5% Si; 2.0-3.0% Zn; 0.8-1.2% Fe; 0.2-0.4% Mg; 0.1-0.3% Co; 0.03-0.1% Sr; 0.02%-0.05% B; 0.05-0.15% RE; the balance is Al; the preparation method includes high-temperature melting aluminum alloy, supplementary elements and trace elements multi-component alloying treatment, Refining slag removal, casting molding. The invention makes full use of the composite synergistic effect of auxiliary alloying of Mg and Co elements and microalloying of Sr, B and RE elements, solves the problem of mutual restriction between the strengthening of the alloy and the improvement of the thermal conductivity of the material, and realizes the thermal conductivity and high thermal conductivity of the cast aluminum alloy. With the synchronous improvement of mechanical properties, a low-Si cast aluminum alloy material for communication and heat dissipation devices with high thermal conductivity and high strength has been obtained.

The invention provides a yellow automation control system in the production of short -fiber jelly glue. By improving and optimizing the existing automatic control system, the redundant process control software is used to build a redundant process control system.The automatic control system in production, including the control unit in order: alkaline fiber feed control unit, real vacuum control unit, CS2 feed control unitMaterial control unit and yellow chemical machine flushing control unit; this control system can accurately control the amount of materials added to each material, ensure the quality of sticky glue after the last yellowing, reduce artificial labor, save costs, and improve production efficiency.

The invention relates to the field of the titanium white salt catalytic treatment and in particular to a treatment system for catalyzing titanium white salt and a method thereof. The treatment systemfor catalyzing the titanium white salt comprises a bracket, a material storage mechanism, a first discharging mechanism, a second discharging mechanism and a stirring mechanism. The material storage mechanism is symmetrically installed at two sides of the bracket. The lower part of the first discharging mechanism is correspondingly provided with the second discharging mechanism. The second discharging mechanism is installed corresponding to the stirring mechanism. The stirring mechanism is coincided with an axis in the second discharging mechanism. The bracket comprises a base bracket, a firstvertical bracket and a second vertical bracket. A preparation method for titanium dioxide is simple and rational. Feeding is convenient, and an addition quantity is easy to be controlled. The preparation method comprises the following steps: adding solution, uniformly stirring, after calcining, evaporating liquid and gas, and enabling metal tungsten and vanadium to be remained on the surface of titanium white particles, wherein the prepared titanium dioxide is high in catalytic efficiency, long in service life, slow in lose efficacy and the like.

The invention relates to light ceramsite co-sintered on the surface by virtue of sodium sulphate and a preparation method of the light ceramsite. The preparation method of the light ceramsite co-sintered on the surface by virtue of sodium sulphate comprises the following steps: spraying a 5-25% sodium sulphate solution in steps, drying and sintering, wherein during drying, sodium ions dissolved in water diffuse toward the surface along with moisture and are enriched on a shell of the surface of each raw nodule; and during sintering, reaction is carried out on the sodium ions in the surface layer and other substances to form fusible substances, an effect of a sintering aid is realized, content of sodium ions in the sintering aid below the surface layer of each raw nodule is low, the ceramsite sintered on the surface layer at a sintering temperature is relatively low in water absorption rate while density of an unsintered core region below the surface layer is relatively low, and finally the light ceramsite with low water absorption rate and low overall density is obtained. The preparation method of the light ceramsite co-sintered on the surface by virtue of sodium sulphate has the advantages that the problems that the water absorption rate of the ceramsite is low, strength is high and volume weight is low are solved; meanwhile, a technology is simple, operation is safe, mass production can be realized, and cost is low.

The present invention discloses a grain refinement method of MG or MG alloy, including the following steps: (1) preparing the intermediate carrier containing industrial zinc ash: the industrial zinc ash and weight percentage of industrial zinc ash with a weight of 20-40 % are 60 percentage of 60 percentage of 20 to 40 %.~ 80 % of the mg powder is mixed after mixing; (2) melting MG or MG alloys, adding an intermediate carrier containing industrial zinc ash and stirring;The invention has the advantages of simple process operations, easy to control the amount of process operations, simple process operations under the condition of achieving waste recycling and reuse of waste, and simple craftsmanship.The refinement of the MG 合al alloy refinement is particularly significant.

The invention relates to the technical field of clean papermaking production, in particular to a flocculant for white water treatment and its use method. The flocculant for white water treatment includes raw soybean milk, and the flocculant has excellent white water purification performance and low cost; the flocculant for white water treatment The method of use comprises the following steps: step A, tailings white water purification and recovery pretreatment to obtain pretreated white water for standby; step B, performing dissolved air treatment on clarified white water, and placing the clarified white water completely dissolved in air in a dissolved air tank , for standby; step C, adding the pretreated white water obtained in step A and the clarified white water in the air-dissolving tank together in the air flotation tank, and simultaneously adding flocculant to the white water inlet of the air flotation tank; Scraping of floating pollutants, the use method has simple process, easy control of process conditions, easy control of the amount of flocculant added, strong operability, good repeatability, good purification effect, and high purification efficiency.