104results about How to "High recycling rate of resources" patented technology

The invention discloses a vacuum pyrolysis test device of a wasted electronic circuit board, which comprises a pyrolysis furnace, a condenser, a vacuum gauge, a vacuum acquisition apparatus, a medium circulating box and a tail gas adsorption tower. The pyrolysis furnace is provided with a charging chamber and a heating furnace chamber, which are sealingly isolated. The top of the charging chamberis provided with an insulation cover and enclosed by resistance heating tapes. The charging chamber is communicated with the condenser through a channel. The vacuum acquisition apparatus which keeps the charging chamber, the heating furnace chamber, the condenser and the channel in a vacuum state in the prolysis process of the wasted electronic circuit board is communicated with all apparatuses or positions in the heating furnace chamber, the charging chamber, the condenser and the channel. The vacuum gauge which measures the vacuum degree of the charging chamber, the heating furnace chamber,the condenser and the channel in real time is arranged on at least one of apparatuses or positions in the heating furnace chamber. The medium circulating box is respectively connected with the vacuumacquisition apparatus and the tail gas adsorption tower through a pipeline. The test device is compact in structure, low in investment, high in comprehensive resource recovery rate, good in economic benefits and free from pollution.

A device for producing crude antimonous oxide through an oxygen-enriched side-blown volatilization melting bath in a smelting mode comprises stock bins, measurement belts, a transfer belt, an electronic belt scale, an oxygen-enriched side-blown volatilization melting bath smelting furnace, a vertical uptake flue, an electric dust collector and a bag dust collector. The oxygen-enriched side-blown volatilization melting bath smelting furnace comprises a furnace body which is defined by a copper water jacket and a molten steel jacket. Oxygen-enriched air spray guns are horizontally arranged on the two sides of the copper water jacket on the lower portion of the furnace body, and the muzzles of the spray guns are flush with the inner wall of the water jacket. Secondary air nozzles are arranged on the molten steel jacket on the upper portion of the furnace body. A hearth constructed with refractory bricks is arranged under the furnace body. An antimony matte siphon chamber is arranged on the front portion of the hearth. A slag siphon chamber is arranged on the back of the hearth. A feeding inlet is formed in the top end of the furnace body. The top end of the furnace body is connected with the vertical uptake flue. A waste heat boiler is arranged in the vertical uptake flue connected with the electric dust collector. The electric dust collector is connected with the bag dust collector. The device is low in energy consumption for operation, and is clean, friendly to the environment and low in production cost when being used for producing the crude antimonous oxide.