By 2020, China will build 50 large-scale solid waste slag(slag products application)comprehensive utilization bases and 50 industrial resource comprehensive utilization bases. The comprehensive utilization rate of base wastes will reach more than 75%, forming a new pattern of comprehensive utilization and development of multi-channel and high value-added.

The key tasks mentioned in the notice are as follows:

Focus on tailings (co-contained ore), coal gangue, fly ash, metallurgical slag (red mud, chemical slag industrial by-product gypsum), industrial waste (construction waste), agricultural and forestry waste and other bulk solid waste Develop and promote comprehensive measures such as policy synergy, mechanism innovation and project traction by selecting areas with large and relatively large amount of waste generated, comprehensive utilization of resources, strong industrial innovation capability, good product market prospects, and significant scale-driven benefits. A batch of bulk solid waste comprehensive utilization of advanced technology, equipment and high value-added products; system (repair) set a series of large-scale solid waste comprehensive utilization standards and norms; implement a number of key projects with demonstration role; Strongly competitive backbone enterprises; build and extend comprehensive utilization of industrial chains across enterprises, industries and regions to promote the high-quality development of large-scale solid waste comprehensive utilization industries.

(1) Tailings (co-contained ore)

Carry out high-efficiency separation and extraction and high-value utilization of useful components of tailings, co-contained ore, non-metallic minerals and waste rock, and jointly produce building materials to realize effective replacement of cement raw materials by tailings. Encourage resource-depleted mining areas to carry out tailings backfilling and tailings pond reclamation, and promote low-cost and high-efficiency cementing filling. Deepen the utilization of tailings in the harmless utilization of agricultural fields and the restoration of ecological environment. Encourage the extraction of valuable component projects and the “bundled” construction mode of the remaining waste comprehensive utilization project, and vigorously promote the coordinated utilization of various solid wastes.

(2) Coal gangue

According to local conditions, focus on the overall planning and resource integration of coal gangue; increase the intensity of coal gangue backfill, coal gangue filling and road construction; and promote the large-scale utilization of coal gangue power generation, building materials, reclaiming greening. Carry out multi-element and multi-component cascade utilization of coal gangue, promote the high value utilization of coal gangue, extract useful mineral elements, and focus on the development of high-value-added products such as agricultural fertilizer, water purification material and cementing material for cement filling.

(3) Fly ash

Vigorously develop the large-scale utilization and high-value utilization of fly ash, and focus on solving the bottleneck problem of comprehensive utilization of fly ash. Develop and apply high-volume fly ash concrete technology, transform and improve the technical level and product quality of new building materials such as fly ash production blocks, and continue to expand the application scale in the field of building materials. Continue to promote the extraction of useful components of fly ash and applications in agriculture. Strengthen the research and development of refined and high-tech products, promote the separation and extraction of high value-added products from fly ash, and promote the construction of high alumina fly ash extraction alumina and its supporting projects. Actively cultivate markets and specialized enterprises, and significantly increase the proportion of large-scale application of fly ash. Gradually eliminate the wet ash of fly ash and strengthen the safe storage management of fly ash.

(4) Metallurgical slag

Encourage the scale and high-quality utilization of metallurgical slag, strengthen metallurgical slag technology research and development and equipment manufacturing, research and develop technical standards and process specifications for metallurgical slag comprehensive utilization, and develop high-quality comprehensive utilization of metallurgical slag as the core comprehensive utilization industry. Actively promote the research, grade utilization, high quality and large-scale utilization of blast furnace slag, steel slag and tailings. Promote the overall utilization of useful components of non-ferrous metallurgical slag extraction, harmless treatment of heavy metallurgical slag and comprehensive utilization; promote advanced products, low quality, high slag consumption, high added value, and fully realize zero discharge of steel slag And non-ferrous metallurgical slag cleaning and utilization. Vigorously promote the application of low-cost red mud de-alkali technology and complete sets of equipment.

(5) Chemical slag

Promote the application of calcium carbide slag, ammonia-alkali waste residue, chromium salt waste residue, yellow phosphorus slag, salt mud, harmless disposal and deep comprehensive utilization, strengthen industrial desulfurization, production of chemical products, and strengthen the application of chemical waste residue and cement, interior decoration and other building materials. Combine to improve the level of comprehensive utilization. Promote the resource utilization of industrial by-product gypsum such as desulfurization gypsum and phosphogypsum instead of natural gypsum, promote the grade utilization of by-product gypsum, expand the production of high-value-added products such as high-strength gypsum powder and gypsum board by by-product gypsum, and encourage industrial by-products. Gypsum comprehensive utilization industry intensive development.

(6) Industrial waste materials (construction waste)

Promote the recycling of industrial waste materials such as scrap steel, waste non-ferrous metals, waste plastics, waste tires, and chemical waste materials in industrial production. Actively promote the fine classification and quality utilization of construction waste, promote construction waste products such as construction waste, building materials, and backfilling, and promote the application of complex building waste recycling technology and equipment, improve collection and clearing. Integrated recycling system for transportation, sorting and reuse.

(7) Agricultural and forestry waste

Effectively promote the comprehensive utilization of crop straw, strengthen technology research and development and equipment manufacturing, and improve straw processing technology and storage and transportation system. Encourage the comprehensive utilization of forestry “three remnants”, sub-small fuelwood, sugar cane bagasse, waste bamboo, tail vegetables and other agricultural and forestry wastes. Promote the treatment and resource utilization of livestock and poultry farming waste. Promote the comprehensive utilization of waste agricultural film, irrigation equipment, and processing by-products of agricultural and forestry products.

(8) Other classes

Rationally promote the comprehensive utilization of solid waste generated along with new production, circulation and lifestyle and which has a great impact on the national economy and people's lives. For example: express packaging waste, discarded shared bicycles, used battery lithium batteries, batteries, waste water treatment membrane modules, waste solar panels, waste blades of wind turbines, large equipment (equipment) dismantling waste.