30results about How to "No attachment" patented technology

The invention discloses a preparation method of titanium powder or titanium alloy powder special for porous titanium film. The method comprises: 1. placing the pressed titanium block or titanium alloy block in a furnace; 2. vacuumizing the furnace and keeping it warm ; 3. Fill hydrogen into the furnace to carry out self-propagating hydrogenation reaction; 4. Titanium block or titanium alloy block absorb hydrogen and saturate to obtain titanium hydride block or titanium hydride block; 5. Crushing and sieving; 6. Coarse powder crushing; 7. Titanium powder or titanium alloy dehydrogenation powder obtained by heat preservation and dehydrogenation; 8. Titanium powder and titanium alloy powder obtained by crushing, sieving, magnetic separation and flotation. The present invention utilizes the heat released by the hydrogenation reaction to meet the heat energy supply required for the continuation of the hydrogenation reaction to carry out a self-propagating hydrogenation reaction, reducing the increase in heat generated by the reaction, avoiding incomplete hydrogenation of the titanium block or titanium alloy block, and improving the efficiency of the titanium block or titanium alloy block. The degree of hydrogenation embrittlement of titanium alloy block can finally obtain finer and uniform titanium powder or titanium alloy powder, which improves the quality of titanium powder or titanium alloy powder.

The invention discloses a peeling antifouling paint of a single-component propeller and relates to the field of the coating technology.The paint is prepared by the following raw materials, in quality percentage,15-65% of resin binder, 0-12% of thinner, 25-65% of copper antifouling agent,5-15% of zinc oxide, 0-10% of organic antifouling agent and 0.5-2% of thixotropicagent; and the resin binder is any one or more of barium petroleum sulfonate, butter,lanum, methylsilicone oil and hydroxyl silicone oil. The antifouling paint provided in the invention is obtained by mixing the above materials uniformly through a high-speed dispersing process. The antifouling paint can achieve temporary antifouling action on the propeller when the ship stops to avoid fouling bioattachment; if the bioattachment is available, marine organism can peel and fall along the coating under the effect of the centrifugal force and current scouring of the propeller when the ship sails; the propeller surface must keep clean without bioattachment;and the antifouling perid is above six months.

The invention provides a method for removing carbon from gasification slag, wherein the method comprises the following steps: Step 1: uniformly mixing gasification slag and water to obtain slurry A with a solid content of 10-70% by weight; step 2: Add grinding media to the slurry A, place in a stirring wet mill, wet grind until the particle size of the gasification slag is ≦20 μm, sieve and take out the grinding media, and obtain slurry B; step 3: Place the metal container containing the slurry B in an electric field to rapidly stratify the components in the slurry B; step 4: recover the upper layer of floating carbon particles from the metal container, recover the middle layer of water, and obtain the lower layer Gasification slag after wet grinding to remove carbon. The method of the invention has good carbon removal effect, the treated gasification slag has high purity and no other harmful chemicals are attached, and the carbon content is lower than 1%, which is beneficial to the subsequent wide application of the gasification slag.