Cement autoclave testing equipment and instruments

Cement autoclave testing equipment and instruments

Main purpose:

Used to determine the steam stability of cement with high magnesium oxide content, study steel slag cement, cement hydration, and other materials that require high-temperature saturated steam testing.

Cement autoclave testing equipment and instruments

Main technical parameters:

1. Overview:

The cement stability autoclave is a product developed based on the requirements of the standard GB/T750-1992 "Test Method for Cement Stability" for testing equipment. This cement stability autoclave is suitable for measuring the uneven volume changes of cement mainly caused by the hydration of magnesia, such as Portland cement, ordinary Portland cement, slag Portland cement, volcanic ash Portland cement, fly ash Portland cement, etc. It is also applicable to other cement products that use this standard. The cement stability autoclave is an instrument used by cement production units, building materials research institutes, universities, and construction quality inspection departments to determine the adverse effects of MgO (magnesium oxide) in cement on its stability.

2、 Structure and principle:

The main components of the cement stability autoclave are mostly made of high-quality stainless steel materials, which can withstand high temperature and high pressure saturated water vapor. The kettle cover is equipped with a pressure gauge made of stainless steel, a safety valve, and two vent valves. The kettle body is installed inside the cylinder shell, and two heating resistors are installed at the lower outer part for heating the kettle body and producing water vapor; The bottom pipe is connected to the electric contact pressure gauge, which is coordinated with the electrical control system to control the pressure inside the kettle within the set range. The upper part of the cylinder shell is equipped with a ventilation ring, and the lower part is equipped with a ventilation plate to block or open the air around the kettle body. An exhaust fan is installed at the lower part to cool down after the experiment. The control box panel is equipped with a main power switch, three buttons for start, stop, and fan, four indicator lights for run, heating, fan, and stop, and a digital time relay for timing.

3、 Technical parameters:

1. Inner diameter of kettle body: 160mm

2. Kettle volume: 0.0085m3

3. Z working pressure: not exceeding 2.5MPa

4. Standard pressure rise time: 60-120 minutes. The pressure inside the pot rises to 2.0MPa (equivalent to a temperature of 216 ℃ inside the pot)

5. The opening pressure of the safety valve is 2.0-2.3MPa, which can be adjusted within the range

6. The fluctuation range of pressure automatic control: not greater than ± 0.05MPa

7. Rated working power: 220V