化验室试题（Laboratory examination questions）.docVIP

化验室试题（Laboratory examination questions） 1, the three stage of cement production is preparation of raw materials, clinker burning, cement made. Four kinds of minerals, 2 Portland cement clinker is three, calcium silicate, calcium silicate two aluminum acid calcium, three ferritealuminate four calcium oxide; four kinds of Portland cement clinker are calcium oxide, silicon dioxide, three two aluminum oxide ferric oxide; modulus of clinker are saturated lime silicate, alumina ratio coefficient the rate of. 3, in order to ensure the accuracy and reproduction of the inspection data, the laboratory shall organize the password check and operation assessment for each inspection post, and the production control posts shall be no less than 4 samples per person per month. 4, cement before leaving the factory, according to the same species, the same strength level number and sampling, bagged cement and bulk cement should be number and sampling, each number is a sampling unit. 5 cement production control in routine determination of moisture of material is the content determination of adhesion of water, with water to prevent the infrared drying cold touch lamp bulb so as to avoid the rupture of bulk samples should be broken into the following 20mm determination, gypsum moisture determination when the temperature is 55 to 60 DEG C. No infrared lamp shall be used. When the moisture content is measured in a drying oven, the temperature is controlled at 105 - 110 DEG C in general. 6. when using the tray balance, the weights are placed on the right side of the scales, and the weights are placed on the left of the balance. 7. the temperature of the grinding cement should be lower than 135 degrees centigrade. First, fill in the blanks: (40 points, 2 points per hour) 1, the main minerals of Portland cement clinker with three calcium silicate, calcium silicate, calcium aluminate two, three ferritealuminate four calcium oxide, mainly calcium oxide, silicon dioxide, aluminum oxide, ferric ox