33results about How to "Anti-corrosion and anti-rust" patented technology

The invention relates to a long-service-life anti-clamp and bite lubricating grease composition and a preparation method thereof. The composition comprises the following components by weight percent: 82.9%-97.5% of compound calcium sulfonate grease, 0.3%-1.0% of an antioxidant and a metal deactivator, 0.6%-4.8% of an anti-rusting agent, 0.3%-3.2% of a solid lubricant, 1.0%-4.5% of a solid filling agent and 0.3%-3.6% of a tackifier. According to the lubricating grease composition, the rusting speed of a pin shaft of a tower crane can be remarkably decreased, the problem that the pin shaft of a tower crane used for large-sized or high-rise building projects with a construction period over 2 years cannot be dismounted due to clamping, biting and rusting under a construction environment can be effectively avoided, and the smooth mounting and dismounting of the pin shaft of a standard knot of the crane tower are realized.

The invention provides an ultra-low emission production method of refined vanadium, which belongs to the technical field of vanadium product processing. The ultra-low emission production method of refined vanadium includes the following steps: grinding and dispersing the ammonium metavanadate filter cake into powder or small particle size, and sintering continuously in a sintering kiln at 100-125°C; On the premise of bag dust removal, the filter residue of bag dust removal is returned to the sintering kiln; the waste gas after bag dust removal is cooled once and then enters a cooling room for secondary cooling; the waste gas after twice cooling is sprayed three times to complete the waste gas Separation of ammonia gas; ammonia-containing wastewater used to absorb ammonia gas in waste gas is injected into neutralized water containing sulfuric acid for ammonia removal. The present invention has the advantages of being able to realize ultra-low emission and the like.

The invention relates to a grease composition for assembling standard sections of a tower crane and a preparation method of the grease composition. The grease composition comprises the following components in percentage by weight: 78.8%-94.8% of common lithium-based grease, 0.2%-0.8% of antioxidant, 0.8%-3.2% of graphite powder, 1.0%-4.5% of light calcium carbonate, 0.5%-3.0% of sorbitan monooleate, 0.4%-2.2% of phenolic resin, 2.0%-6.0% of sulfonate and 0.3%-1.5% of polyisobutene. The special grease composition for assembling the standard sections of the tower crane is obtained by adding additives such as the antioxidant, an antifriction agent, an anti-locking and anti-occluding agent, an anti-rust agent, a tackifying agent and the like into the common lithium-based grease taken as a carrier. According to the grease composition, the corrosion speed of shaft pins of the tower crane can be slowed, the shaft pins are prevented from being corroded and bonded with a shaft sleeve during building construction, and the pin shafts of the standard sections of the tower crane can be smoothly assembled and disassembled. The service cycle of the grease composition is within 1-2 years.