41results about How to "Comply with the industrial policy of energy conservation and emission reduction" patented technology

The invention discloses a method for preparing jade type microcrystalline glass with high-temperature furnace slag, which comprises the steps of: taking molten furnace slag as main materials; adding auxiliary materials such as fluxing clarifying agent and additive, and the like; further melting and clarifying in a high-temperature furnace to form glass liquid; pouring or calendaring the glass liquid to form basic glass; heat processing the basic glass by means of crystallization to obtain the rough product of the jade type microcrystalline glass; and finish machining to obtain the finished product of the jade type microcrystalline glass. The method not only effectively utilizes the molten high-temperature furnace slag, but also sufficiently utilizes heat energy stored in the high-temperature furnace slag, and prevents the high-temperature furnace slag from generating huge amounts of corrosive hot steam in the process of discharging. The jade type microcrystalline glass prepared by themethod is in the status of semitransparent wax, exactly looks like natural jade, has good cutting performance, high intensity and good tenacity, can be used for replacing natural stones in construction industry, and can be used for replacing natural rare jades in machining artware.

The invention provides a method for preparing M 2+ ‑Al 3+ ‑Fe 3+ Methods and applications of hydrotalcite-like materials. The method is: add dilute hydrochloric acid to acidify the feedwater sludge containing amorphous iron and aluminum hydroxide, adjust the pH value, and stir to convert amorphous iron hydroxide and aluminum hydroxide into Fe 3+ and Al 3+ , then add a certain amount of divalent metal salt and urea, react at 120-180°C for 12-48 hours, wash the resulting precipitate, filter, and dry to obtain M 2+ ‑Al 3+ ‑Fe 3+ Multi-component hydrotalcite materials. The method is a new method for resource utilization of water supply sludge from a waterworks, and has the advantages of small equipment investment, low energy consumption, wide application of the obtained product, and high added value.

The invention relates to a method for preparing phenol, which can be used for continuous production as well as improving the production efficiency and reaction yield. The method for preparing phenol comprises arylsulphonate and alkali have alkaline fusion reaction, and is characterized in that the alkaline fusion reaction is carried out in a screw reactor which is a known reactor. As a preferableproposal, the screw reactor is a double-screw extrusion reactor, and both the arylsulphonate and the alkali are solid. Compared with the traditional intermittent kettle type alkaline fusion method, the method of the invention shortens the reaction time by two thirds, obviously reduces the phenomena of material coking and decomposition, improves the reaction yield to be more than 10%, and increasesthe crude phenol content by over 90%. As arylsulphonate solid is applied in the reaction, the water vapor containing phenol generated in the alkaline fusion process can be greatly reduced, the processing is simple, environmental protection burden can be remarkably alleviated, and the method is in accordance with the existing national energy-saving and emission-reduction industrial policy.

The invention provides a method for preparing a microcrystalline jade plate by phosphorus slag, comprising the following steps: blending materials: mixing an addictive with a clarifying agent to form a uniform auxiliary mixed material; melting: adding the auxiliary mixed material to the molten phosphorus slag to obtain molten glass by melting, performing heat preservation, homogenizing and clarifying the molten glass to obtain molten high-temperature glass melt; molding: molding the high-temperature glass melt to obtain a formed base glass plate; crystallizing: transferring the formed glass plate to a crystallizing and annealing kiln for crystallizing and annealing; and finish machining: after the microcrystalline jade plate is delivered from the kiln, machining the glass plate to obtain a finished product of the microcrystalline jade plate. The microcrystalline jade plate obtained by the method has the advantages of wear resistance, corrosion resistance, high temperature resistance, no radiation, high utilization rate of the phosphorus slag, higher social benefit and higher economic benefit.

The invention relates to a foam glass ceramic prepared from blast furnace hot melting slag and a preparation method of the foam glass ceramic, belonging to the field of inorganic materials. In the preparation method, steeling blast furnace hot melting slag is used as a main raw material, coal ash, borax, calcined soda, rear sorted tail ore, quartz sand and the like are respectively measured, evenly mixed and then baked into porous blocks, the porous blocks are added in a slag ladle, smelting is carried out by using the blast furnace hot melting slag, a melting material is subject to water quenching to obtain glass water quenching materials with different particle sizes; and the glass water quenching materials are dried and ball-milled, a foaming agent is added to be mixed with the dried and ball-milled glass water quenching materials, press forming or spreading forming is carried out, and then the foam glass ceramic is prepared by nucleating, crystallization and sintering. In the invention, a large amount of heat energy stored in the blast furnace hot melting slag is effectively utilized, and production cost is lowered; and the prepared foam glass ceramic has the characteristics of low thermal conductivity, small density, high temperature resistance, corrosion resistance and high compression resistance and breaking strength, has strong adaptable property on high-low temperature variation of smoke, and can be widely used as a multi-cylinder type and sleeve type lining material for discharging smoke by wet desulphurization in a heat-engine plant, thermal equipment insulation, heat-insulating materials and the like.

The invention discloses an industrial preparation method of an iron oxide resin composite absorbing agent and belongs to the field of industrial production of composite resin absorbing agents for treating wastewater. The industrial preparation method includes the steps of (A), adding strong-base anion resin into a ferric salt solution in batches, and stirring; (B), filtering, and recycling filtrate to be reused in the step (A); (C), adding the filter residues of the step (B) into a sodium hydroxide solution in batches to perform reaction, and filtering; (D), adding NaOH into the filtrate of the step (C), and reusing the filtrate in the step (C); (E), using a sodium chloride aqueous solution and water to wash the filter residues of the step (C), filtering, and drying. The industrial preparation method of the immobilized Fe (III) strong-base anion resin absorbing agent has the advantages that substances such as the ferric salt solution, alkali liquor and acid liquor can be recycled and reused, production cost and environment pollution are reduced greatly, and the method conforms to the current industrial policy of energy conservation and emission reduction of China and suitable for being industrially popularized.

The invention provides a novel welding slag ladle suitable for a slow cooling process of copper slag. The novel welding slag ladle comprises a ladle body, a ladle bottom and a plurality of ladle feet, wherein the ladle body is pressed into a whole; the ladle bottom is welded at the bottom of the ladle body; the ladle feet are welded at the bottom of the ladle bottom; a radiating space is formed between the two adjacent ladle feet; the ladle body, the ladle bottom and the ladle feet are all made of low-alloy high-strength plates. The novel welding slag ladle does not have any structural change during a using process and is particularly suitable for the slow cooling process of the copper slag; the service life of the welding slag ladle is greatly prolonged, so that the recycling cost of the copper slag is reduced.