5 results about "Circular economy" patented technology

The invention relates to a method for producing energy-saving sintered bricks from mud. The sintered brick is made from river mud, municipal sludge and sea mud as raw material, by mixing with silica-based inorganic binder at a certain proportion, ageing, extruding with a extrusion molding machine to obtain blanks, cutting the blanks with a cutter, drying, sintering and burning. The invention makes full use of mud and the additional amount of mud is high up to 50%. The invention realizes energy and resource conservation and helps develop the circular economy and realize the comprehensive utilization of resources. The produced energy-saving sintered brick has the advantages of high porosity and good heat-insulation effect. During the sintering process, the flue gas is circularly treated, the exhaust gas is treated with acidic and alkaline solutions to remove harmful substances (such as dioxin) from the exhaust gas, and harmful substances such as heavy metals are solidified, therefore, the whole production process and the final product do not cause environmental pollution or hazard.

The invention relates to the technical field of production of porcelains and particularly relates to an environment-friendly antique imitation porcelain with firewood-calcined porcelain imitation texture and a production method thereof. According to the environment-friendly antique imitation porcelain with firewood-calcined porcelain imitation texture and the production method thereof, low-cost raw materials are taken as the raw materials of a blank and a glaze material of the environment-friendly antique imitation porcelain with the firewood-calcined porcelain imitation texture, the raw materials are proportioned and a calcining process is controlled to obtain the environment-friendly antique imitation porcelain, the calcined environment-friendly antique imitation porcelain has the texture like a firewood-calcined porcelain, the surface of the calcined environment-friendly antique imitation porcelain has uneven metallic luster, and through control of the firing temperature and change of the firing atmosphere, the texture change on the surface of each porcelain is unique. The raw materials of the environment-friendly antique imitation porcelain are simple; compared with the firewood-calcined porcelain, the environment-friendly antique imitation porcelain has the characteristics of short calcining time, no combustion of firewood and high environmental friendliness; the environment-friendly antique imitation porcelain is of great significance on reduction of environmental pollution, development of cyclic economy and construction of resource-saving and environment-friendly society.

A craft for processing preserved eggs by utilizing tea dust comprises the following steps: putting salt, calcined lime, dietary alkali, zinc sulfate, plant ash and tea dust into an olla, pouring boiling water into the olla in twice to prepare ingredient water; blowing the ingredient water in the olla by utilizing an air blower, and carrying out stirring during the blowing; putting the eggs into the olla, and soaking for 30-35 days in a sealed manner; taking out the soaked eggs for cleaning with cooled boiled water, and airing; taking out sediment in the ingredient water in the olla, grinding into ingredient powder, and putting into an accommodating tank; grinding yellow mud dried in the sun into yellow mud powder, and putting the yellow mud powder into the accommodating tank for uniform stirring to prepare mixed powder; wrapping the eggs with the mixed powder, then wrapping the eggs with paddy hull, putting into the olla, and sealing for more than 15 days so as to obtain the preserved eggs. After being cut, the preserved eggs prepared by utilizing the tea dust is five-colored, and the guarantee period is 360 days, the lead content is low, and is only 0.01; the ingredient wastewater is recycled, the cost is effectively reduced, the function of environment protection is played, and cyclic economy application is facilitated.

The invention provides an improved single-side folding screen filter plate. The improved single-side folding screen filter plate comprises a base plate, a hole plate, a middle support screen and a filter screen, wherein the base plate is a filter plate body; a liquid outlet end is arranged at one end of the base plate; a clean liquid cavity is formed in the other end of the base plate; the clean liquid cavity is a concave cavity; support plates are arranged at the upper periphery of the concave cavity; N support ribs are arranged at the bottom in the concave cavity of the clean liquid cavity; the hole plate is paved to cover the clean liquid cavity and then is connected with the support plates and the support ribs; the middle support screen is folded to pave in a corrugate shape to cover the hole plate and the support plates and then is connected with the hole plate and the support plates; the filter screen is folded in the corrugate shape, is matched with the corrugate shape of the middle support screen and is connected with the support plate to form the filter plate, the middle support screen is paved with the filter screen; the filter plate is made of a stainless steel material; the filter plate is applicable to various industries and fields and simple to manufacture; products are high in filtering precision and long in service life; the filter screen is simple to replace; the base plate can be reused; the replaced filter screen can be recycled and regenerated, and thus the circular economy implemented and a foundation is layed for implementing standardization of the field.

The invention relates to a technology for making bricks from aggregate waste residues. The technology comprises the following steps: S1, obtaining the aggregate waste residues; S2, crushing the aggregate waste residues to form a powdery material; S3, taking the powdery material obtained in step S2, cement plant kiln dust and cement in proportion to obtain a mixture, wherein the mixture contains, by mass, 75-77% of the aggregate waste residues, 9-11% of the cement plant kiln dust and 10-13% of cement; S4, adding water accounting for 0.5-1% of the total mass of the mixture into the mixture, andperforming stirring; S5, feeding the stirred mixture obtained in step S4 into a press mold for molding, and pressing the molded mixture to form green bricks; and S6, carrying out autoclaved curing onthe green bricks by using an autoclave. The technology for making bricks from aggregate waste residues can effectively utilize the aggregate waste residues and reduce the discharge amount; and all theraw materials used for making the bricks come from the self cement plant and the aggregate factory, so the industrial chain of the cement enterprise can be easily extended to form circular economy enterprises.