51results about How to "Increase Fe content" patented technology

The invention relates to an aluminum alloy material which is characterized in that the aluminum alloy material comprises the following components by weight percent: 0.16-1.2% of Fe, 0.001-0.8% of Cu, 0.001-0.8% of Mg, 0.001-0.8% of Zn, 0.001-0.8% of Ca, 0.001-1.0% of rare-earth elements, a trace amount of strontium, titanium, boron, nickel, chromium, zirconium, vanadium, beryllium, cobalt, lead, tin, bismuth, molybdenum, silver, indium, niobium and barium and the balance of aluminum. The alloy has excellent mechanical strength, processing performance and corrosion resistance and is suitable for the cable armored sheath.

The invention provides a technology for recycling lithium hydroxide from a solution through a bipolar membrane method. By means of the technology, the lithium sulfate solution is processed through a bipolar membrane system, and produced water produced through the bipolar membrane system is lithium hydroxide and sulfuric acid. By means of the technology, the environment pollution problem is solved, alkali and acid consumption is reduced, cleaner production, energy saving and emission reduction are achieved, and operating cost is lowered.

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 discloses a heat-resistant recycled die-casting aluminum alloy and a preparation method thereof, belonging to the field of preparation of recycled die-casted aluminum alloys. The invention includes a method for providing a heat-resistant recycled die-casting aluminum alloy and a preparation method for reducing the preparation cost; the chemical composition of the heat-resistant recycled die-casted aluminum alloy is as follows: the content of Si is 10.0-12.0%, and the content of Ni is 0.50-0.75%. , the content of Mg is 0.95-1.35%, the content of Fe is 0.9-1.4%, the content of Mn is 0.20-0.30%, the content of Cr is 0.08-0.12%, the content of B is 0.015-0.03%, and the content of impurity elements is ≤ 0.15%, and the rest is Al; the preparation method is as follows: smelting, sampling to adjust the alloy composition, refining after adding low-melting point alloy, slag removal, and casting; the present invention effectively reduces the alloy content by replacing Ni and Cu with cheap impurity element Fe. Cost, and through the compound modification technology of Mn, Cr, B, etc., the size of the iron-rich phase is refined to ensure the high temperature strength of the alloy.

The invention provides a bipolar membrane method for recovering lithium hydroxide from a solution. The lithium sulfate solution is treated with a bipolar membrane system, and the produced water after the bipolar membrane system treatment is lithium hydroxide and sulfuric acid. The invention not only solves the problem of environmental protection, but also reduces the consumption of alkali and acid, realizes clean production, saves energy and reduces emissions, and reduces operating costs.

The invention provides a super-soft aluminum alloy conductor and a preparation method thereof. The aluminum alloy conductor comprises the following materials in percentage by weight: 0.3 to 1.5 percent of Fe, 0.001 to 0.3 percent of Be, 0.005 to 0.6 percent of Cu, 0.1 to 1.5 percent of rare earth, less than or equal to 0.08 percent of Si, less than or equal to 0.15 percent of total inevitable impurities, and the balance of aluminum. The aluminum alloy is drawn into an aluminum alloy wire by melting, continuous casting and continuous rolling, and the aluminum alloy wire is put into an annealing furnace and annealed for 20 to 40 hours at the temperature of between 380 and 420 DEG C to form the aluminum alloy conductor, wherein the annealing is performed in a sealed heat insulation device under the protection of nitrogen. The aluminum alloy has extremely good toughness and elongation performance, the coefficient of elongation reaches or exceeds 35 percent and even can reach 40 percent, and the electric conductivity can reach 60 percent IACS.

The invention belongs to the technical field of water treatment, and particularly relates to a steel pickling waste water resourcization and zero discharge process. The steel pickling waste water resourcization and zero discharge process comprises the following process steps of: (a) introducing steel pickling waste water; (b) carrying out Fenton reaction on the steel pickling waste water to reduce the COD (Chemical Oxygen Demand) of the steel pickling waste water to be less than or equal to 60 mg / L, convert Fe<2+> into Fe<3+> and reduce TDS (Total Dissolved Solids) to be less than or equal to 2000 mg / L; (c) carrying out FeC microelectrolysis reduction reaction on the steel pickling waste water; (d) carrying out neutralization flocculation; (e) desalting a membrane assembly to reduce the TDS of the steel pickling waste water to be less than or equal to 200 mg / L; (f) recycling effluent water. The steel pickling waste water resourcization and zero discharge process disclosed by the invention realizes the cleaning production, realizes the resourcization utilization of waste water, waste acid and iron mud, generates the benefit and realizes the zero discharge.

The invention belongs to the technical field of welding materials, and discloses Ti-Zr-Ni-Fe-Cu-Co-Mo-B brazing filler metal and a preparing method and application thereof. The brazing filler metal comprises the following components including, by mass, 29%-32% of Zr, 3.4%-7% of Fe, 7.5%-13% of Ni, 3%-5% of Cu, 2%-4% of Co, 1%-3% of Mo, 0.2%-0.6% of B and the balance Ti. According to the brazing filler metal, the preparing method and application, burdening is carried out according to the contents of the above components; and an electric arc melting method is adopted for preparing a brazing filler metal alloy ingot, the alloy ingot is smashed into small particles to be heated and melted, and a rapid set technology is adopted for preparing the Ti-Zr-Ni-Fe-Cu-Co-Mo-B foil brazing filler metal.The brazing filler metal has the advantages that the belt forming performance is high, the cost is low, and the braze TiAl and Ni based high temperature alloy connector connecting strength is high.

The invention provides a super-strong high-plastic titanium alloy, which comprises the following composition by weight percentage: Al: 4.5% to 5.75%, Mo: 3.0% to 5.0%, Zr: 2.0% to 4.0%, Fe: 2.0% to 3.0%, Sn: 0.3%-2.0%, Cr: 0.30%-1.2%, O≤0.15%, and the rest are Ti and trace impurities. The invention also provides a preparation method of the super-strong high-plastic titanium alloy. The invention increases the tensile strength of the titanium alloy to 1400MPa-1550MPa through the simultaneous addition of multiple multi-element alloys, while ensuring the processing plasticity of the material, making the elongation greater than 10% and the reduction of area greater than 20%.