The main method for measuring the moisture content of water-based rock debris is through drying and weight reduction. The specific operation can be divided into two categories: specialized instrument method and traditional laboratory method. It is necessary to ensure that the measurement accuracy meets the requirements of industrial standards (usually controlled within12%Within).

‌1、 Special moisture analyzer method‌

‌Instrument model‌As follows:BOS-1205MAHalogen moisture analyzer, with core components made in GermanyHBMWeighing sensor, weighing resolution0.001gTemperature regulation range45℃~200℃.1
‌operating steps‌：

1. ‌Calibration and zeroing‌: Install sample disk (diameter)90mm）And the bracket, calibrate the instrument according to the instructions and reset it to zero.

2. ‌Sampling and weighing‌：取3gSpread representative water-based rock debris samples flat on the sample tray and record the initial weight.

3. ‌Heating and drying‌：

o Select automatic/Manual program, set temperature (recommended)105℃~110℃）And heating mode (standard or fast).

o After startup, the annular halogen lamp heats the sample to a constant weight (the instrument automatically determines the endpoint).

4. ‌Result reading‌：

o The instrument directly displays data such as moisture content, solid content, and moisture regain, and automatically calculates the average value.

‌advantage‌：

• Automated measurement to avoid human error, with a single test approximately10~30minute;

• Support data storage andRS232Interface export.

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‌2、 Traditional drying method (laboratory standard)‌

‌Applicable scenarios‌When no dedicated instruments are available, an oven, dryer, and analytical balance are required.
‌step‌：

1. ‌sampling‌：取50gThe above natural water bearing rock fragments can be quickly weighed（m₀）, accuracy0.01g.

2. ‌dry‌：

o Sample placement105℃~110℃Oven drying24Hour;

o Transfer to a dryer and cool to room temperature.

3. ‌Redundancy and Calculation‌：

o Weigh the quality after drying（mₛ）；

o Moisture content formula:
w=m0−msms×100%w=msm0−ms×100%
Keep the result to two decimal places.
‌critical control point‌：

• The drying time needs to ensure constant weight (quality change)≤0.01g）；

• The cooling process must strictly prevent moisture absorption.

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‌3、 Precautions‌

1. ‌Sample representativeness‌The rock fragments need to be mixed evenly to avoid clumping and affecting measurement accuracy;

2. ‌Temperature setting‌: Exceeding110℃May lead to organic matter decomposition, below105℃Is it dry;

3. ‌industrial standard‌The moisture content of processed water-based rock debris needs to be≤15%Only then can transportation or reuse requirements be met.

‌Appendix: Definition of Moisture Content‌

‌Wet basis moisture content‌：M=100×(wet weight−dry weight)/wet weightM=100×(wet weight−dry weight)/Wet weight（≤100%）；

‌Dry basis moisture content‌：M=100×(wet weight−dry weight)/dry weightM=100×(wet weight−dry weight)/Dry weight (can be greater than)100%）.