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1、化验室作业指导书(例行)培训考试题答案Lab assignment instruction (routine) training exam answersA fill of blank:The routine room checks the process control procedure, samples the raw materials, cooked materials, and the cement, and keeps the sample according to the sample management system, and completes the identific
2、ation.The sieve must be kept clean, check check regularly, measure accurately, and clear out the residue of sieve residue should be carefully checked out.3, the determination of specific surface area instruments often should keep clean, the height of the liquid level in the pressure gauge should kee
3、p rules should be paid attention to in the bottom of the filter paper pressure paper edge to prevent leakage of material, dao is compacted specimens, the edge of support ring and cylinder mouth close contact. When pumping air, turn on the tap slowly to prevent the liquid from breaking outTwo simple
4、questions:(1) the description of duties and permissionsLaboratory test groupTo be responsible for the monitoring of the control points of each control point in the cement production process.To be responsible for the preparation and management of raw materials, cooked materials, cement and warehouse
5、entry, to ensure the quality of cement.Be responsible for equipment, inspection, maintenance and maintenance.Duty and authority of the duty officerResponsible for the quality, safety and health of the group.To prepare the original records of the group and the management of relevant technical data.Be
6、 responsible for the maintenance, maintenance and proper use of the equipment.To be responsible for the implementation of various management systems in the laboratory, and to supervise the staff to observe the operating procedures.Responsible for the report and the post of the quality accident list.
7、To be responsible for the use and distribution of equipment, medicine, materials and labor insurance.To check and compare the work of the interior department to ensure the accuracy of the experiment is above 98%.To be responsible for the system, regulation and conference spirit of the company and th
8、e laboratory.3.9 has the right to properly allocate the division of technology in this class, and shall not be responsible for the work. Do not obey the work arrangement and the violation of discipline.Be responsible for the other transactional work assigned by the director(2) the determination of t
9、he fCaO in the familiar materialsAccurate said take sample 0.5 g dry heap shape bottle of 250 ml, add 15 to 20 ml, ethylene glycol, ethanol solution joggle conical bottle samples can spread out, in a large, on the tester, open power supply and shut, adjust the working hours to 6 minutes, at a relati
10、vely low speed mixing solution, heating at the same time, the voltmeter is a pointer to the location of the 150-220 - v, when the condensation of the ethanol began to drop, press the start key, start time, slightly lower temperature voltmeter to about 150 v increase speed, after the timing, extracti
11、on, remove the pile shape bottle, using standard solution titration acid anhydrous ethanol to red. Write down the volume, press the start stop key and turn off the total power switch.The percentile of percentile is calculated by the following testTest: TcaO - no water ethanol standard solution is eq
12、uivalent to mg/ml per milliliter of benzoic acid.V - titrate consumption of benzoic acid without water ethanol standard solutionG - sample weight(3) the determination of trioxide in cement1.1 use DM1240 type X fluorescent sulfur analyzer1.1.1 boot 30 minutes for preheating period, the lower display:
13、 preheating, content measurement in this stage, if no words, no sampling, said content measurement can be performed.2: sample press2.1.1 tabletting pipette, steel ring in the preforming die mat first, pay attention to the steps down, down to position the stamper in the steel ring ring, will stir sam
14、ple in 1/100 scales said 12 grams of sample inside die, powder with agitator, leveling and then die in stem slowly into the die ring make its whereabouts. Then use the hand to hold the press ring to move a pressing die to make the powder fully and evenly. Note that after the powder is poured, the wi
15、re ring is not allowed to move on the wire mat.2.1.2 will die of the sample loading, heart is moved to the tablet machine workbench visual center, pulling handle, (counterclockwise) to a horizontal position, pressure for 5-10 seconds, slowly turn the handle clockwise () to the starting position.Take
16、 out the pressure die and press the die ring with one hand.Turn a press die rod with another hand, make the die face and the back of the sample from adhesion, then took samples of steel ring can be easily separated from molding, ear ball washing wash away the dust, on the two sides will take sample
17、steel ring, in turn, bow (step up) to the above is the sample surface under test. Push the skateboard to select the calibration of the work curve M2, the countdown to the start (setting 1 minute) is zero seconds. The measurement of the end of the instrument will be able to read the contents of the s
18、ample, fill in and report to the workshop.(4) the measure of the fineness of the description:3.1 steps: accurately said 25 g sample, put in clean water, rinse immediately with fresh water - most of the fine powder, through on the screen on the shelf, flush with water pressure of 0.04 Mpa nozzle cont
19、inuous 3 minutes, sieve, sieve residue with a small amount of water sample rushed to the baking dish in, wait to sample all particles precipitate, carefully poured out water, drying, scales weighing screenings, and then calculate the percentage of triage.Fineness calculation formula: sieve residue =
20、 G1 / G times 100%Type: G1 - sift sample weight (gram)G - sample weightThe actual fineness = correction coefficient by sifting the percentageThe determination of calcium oxide and iron oxide4.1 and the sample of back on the balance of 1/100 accurately said 12 g sample, in die ring, using cross blend
21、er to die pressing ring of samples, to die in the die ring, free down slowly, and then a complete set of mold, together with the samples into tablet machine workbench center position, close the oil film pressure door, pressurized to 12 mpa, wait for a moment after being tablet elastic disappear, ope
22、n the oil film pressure gate, take a whole set of mold, die out slowly and carefully rod and molding ring, remove samples with ears ball away excess dust absorption. The extruding sample should not be cracked, smooth and smooth, not protruding steel ring, otherwise it must be redone.4.2 main menu ch
23、oice, 1, content, with curve of three materials, press and automatic, put pressure good samples in the test sample slot, after 1 minute, the instrument panel will appear on the result of the CaO, Fe2O3, the result is the final result.Describe the determination of the mixture5.1 and the sample of bac
24、k on the balance of 1/100 accurately said 12 g sample, in die ring, using cross blender to die pressing ring of samples, to die in the die ring, free down slowly, and then a complete set of mold, together with the samples into tablet machine workbench center position, close the oil film pressure doo
25、r, pressurized to 12 mpa, wait for a moment after being tablet elastic disappear, open the oil film pressure gate, take a whole set of mold, die out slowly and carefully rod and molding ring, remove samples, with ears ball away excess dust absorption. The extruding sample should not be cracked, smoo
26、th and smooth, not protruding steel ring, otherwise it must be redone.5.2 main menu choice, 1, the content of the composite cement 32.5 m. m. 5,42.5 ordinary cement 6 press and automatic, put pressure good samples in the test sample slot, after 1 minute, the instrument panel will appear on the mixed
27、 material as a result, the result is the final result.(6) a description of the measurement of the surface area6.1 leak test6.1.1 put a rubber plug on the cylinder to the top of the cylinder. Use a pneumatic device to remove some of the gas from the pressure gauge arm and then close the valve to see
28、if it leaks. If leakage is found, the piston grease can be sealed.The confirmation of the 6.2 porosity (epsilon)PI, P type the void fraction of cement made 0.500 + / - 0.005, the void fraction of cement powder or choose other 0.530 + / - 0.005.When the sample is not pressed to the specified position
29、, the rate of clearance is allowed.The adjustment of the gap rate is based on 2000g weight (5 equal weight)Determine the sample sizeThe sample size is calculated by the formula (1) :M = rho V (1-epsilon). . (1)Formula:M - the sample quantity required is g (g);Rho - sample density,The unit is grams p
30、er cubic centimeter (g/cm3);V - test material volume, measured by JC/T956; The unit is cubic centimeters (cm3);Epsilon - the interval rate of test material.Preparation of test material6.4.1 put the perforated plate on the edge of the permeable cylinder, and place a piece of filter paper on the perfo
31、rated plate, and the edge is flat and pressed. Weigh the sample size of 14.3, to 0.001 g, and pour into the cylinder. Tap the side of the cylinder to smooth the surface of the cement. Put in a piece of filter paper, and use the rammer to make a solid sample until the ring is in contact with the top
32、edge of the cylinder, and spin 1 2 laps and slowly remove the rammer. When the sample is not pressed to the specified position, the rate of clearance is allowed.The filter paper on the plate of 6.4.2 is a circular filter with smooth surface of the 12.7 mm edge. New filters are required for each meas
33、urement.6.5 permeability test6.5.1 puts a thin layer of piston grease on the cone under the cone of the test bed and then inserts it into the tip of the pressure gauge at the top of the cone, rotating (1 2). To ensure that tight connections are not leaky and not vibrate. 6.5.2 open the miniature ele
34、ctromagnetic pump slowly to pump air out of the pressure gauge arm until the pressure gauge is raised to the lower end of the unit to close the valve. When the pressure gauge on the surface of the liquid inside the concave surface down to timing starts when the first groove, concave surface when the
35、 liquid surface down to the second stop timing when the scribed line, line of liquid level from the first scale to the time needed for the second calibration. Record, in seconds and record the test temperature (). Every breath test should be reprepared.Take down the cylinder and pour out the sample
36、with a rammer.After the completion of the 6.7 test, the cylinder, rammer, filter paper, perforation plate and balance weight are returned to the box for use.6.8 the calculation results(7) : a description of the rules for the reoperation of the cooked stock8.1 put 5 mm 7 mm sieve sieve, remove the cl
37、inker on the zipper, in 7 mm sieve, and then the shaking sieve, made less than 7 mm of clinker by mesh into 5 mm sieve and the clinker will be greater than 7 mm out, screen to move 5 mm sieve in the clinker, put the 5 mm sieve in the rest of the clinker into lisheng inside the cylinder, with the iron ruler will be higher than the clinker TongKou shaved, with lisheng heavy cylinder surface level, and then weighing.The 8.2 liter repress calculation:Vertical lift = (total mass - tube mass) * 2 (g/L)