Abstract: An apparatus for pyrolysis of organic wastes includes: a feeding mechanism, a pyrolysis reaction mechanism, a carbon black slagging mechanism, a cyclone vacuum cleaner, a catalytic converter, a gas treatment mechanism 6 and a crude oil pump. The two said feeding mechanisms are both connected to the pyrolysis reaction mechanism, the carbon black slagging mechanism is connected to under a right end of the pyrolysis reaction mechanism via a pipeline, the cyclone vacuum cleaner is arranged at an upper end of the pyrolysis reaction mechanism, two said catalytic converters are connected at a top end of the cyclone vacuum cleaner via a pipeline, the gas treatment mechanism is connected to a high end of the catalytic converter via a pipeline, and the crude oil pump is connected to a lower end of the gas treatment mechanism via a pipeline.

Abstract: The invention discloses a strontium ferrite-based sacrificial mortar and its preparation method, the strontium ferrite-based sacrificial mortar mainly comprises 720-1000 parts of sulphoaluminate cement, 100-300 parts of strontium ferrite, 600-650 parts of quartz sand, 400-450 parts of water and 0.01-35 parts of superplasticizer. The preparation process is simple, and the strontium ferrite-based sacrificial mortar can be prepared by using a conventional forced single horizontal shaft concrete mixer. The obtained mortar has excellent working performance, compressive strength and corrosion resistance. It can be used in the current third and future fourth generation nuclear power plant core catchers, and has obvious engineering application value.

Abstract: A sacrificial concrete for a core catcher and a preparation method thereof are provided. The sacrificial concrete includes raw materials in parts by weight as follows: cement, 575˜625 parts; a quartz sand, 1200˜1300 parts; a hematite ore, 700˜800 parts; water, 200˜220 parts; a water reducing agent, 7˜10 parts; and strontium oxide, 0˜10 parts. The process of the preparation method is simple, and the sacrificial concrete with excellent performances of fluidity, strength and high-temperature resistance can be prepared by the known mixing technology. The sacrificial concrete can reduce releasing of radioactive substances 89Sr and 90Sr, so as to improve safety of nuclear power plants in case of a severe accident. Moreover, the sacrificial concrete can be used not only in a core catcher of current third generation nuclear power plant, but also in a core catcher of future fourth generation nuclear power plant, and has widespread engineering application value.