Crushed glass

What is the equivalent diameter of crushed glass (t ) = 0.65) with a fractional free volume of 0.55 and a specific... 

Furthermore, he found a rise in rate of reaction upon increasing the surface-to-volume ratio by introducing glass wool into the reaction vessel.186 Burdick69 examined in more detail the effect of packing the reaction vessel with various substances, including crushed glass, pumice,... 

Preliminary Purification of Lima Bean and Alfalfa. The pH 7 buffer solution was washed once with ethyl acetate, acidified to pH 2 with sulfuric acid, and extracted several times with ethyl acetate. The combined ethyl acetate extracts were evaporated under reduced pressure below 40° C. The residue was dissolved in pH 7 buffer and then added to a charcoal column (10 grams of 1 1 Darco G-60-crushed glass particles). The column was eluted with 95% acetone, the eluate was evaporated to dryness, and the residue was taken up in methanol. 

The first deployment of CBPC for stabilization of Hg using Ceramicrete was reported by Singh et al. [58]. These authors used the CBPC process to stabilize crushed Hg light bulbs that were radioactively contaminated. Visual inspection of the waste revealed that 90 vol% of the waste was <60 mm in size. Typical size of the crushed glass ranged from 2 to 3 cm long by 1-2 cm wide down to fine particulates. Chemical analysis indicated... 

Glass represents approximately 5-9% of waste by weight but as it is chemically inert, does not bum, rot, putrefy or degrade, there are no direct pollution hazards. Crushed glass is beneficial to land fill and in incinerators glass containers can assist in aerating the mass and thereby improve combustion. 

These are employed to check the alkalinity extractives. The pharmacopoeial tests may be based upon surface extraction tests (i.e. type II surface treated glass) or crushed glass where the glass composition is checked (type I neutral glass). 

Large mortars and pestles. If much work with ores is to be undertaken and if the ores cannot be obtained ready-ground, a laboratory-scale rock crusher either power-driven or hand-operated, should be made available. A convenient tj e of crusher, which is also useful for crushing glasses such as the boron trioxide obtained in Experiment 15, consists simply of a large hemisphere of iron, about 9 in. across, with a handle attached, which can be rotated in an iron mortar which it fits closely. A peg in the base of the mortar engages with a socket in the bottom of the iron hemisphere. 

Crushed glass or cullet, if properly sized and processed, can exhibit characteristics similar to that of a gravel or sand. As a result, it should also be suitable for use as a road base or fill material... 

Crushed glass (referred to as cullet), is reused as a raw material for use in the manufacture of new glass containers... 

Quantitative description of the degree of inhomogeneity of a glass is difficult. Density or refractive index measurement on crushed glasses can be used as a relative measurement of intensity of inhomogeneity. Visual examination of a pattern consisting of dark, parallel lines... 

Aggregate Basalt 0/1 Crushed brick Fireclay 0/1 Corund 0/1 Crushed glass ... 

Density measurements were carried out on crushed glass pieces obtained fiom the same sample set as used for FTIR and UV-Vis spectroscopy measurements by the Archimedes method. Deionized water with a few drops of surftictant was used as the weighing mediuiiL A wire mesh, hung fiom a support fiame connected to a balance, was used to suspend the samples in the water. A thermometer was clipped to the water beaker to continuously monitor the water bath temperature. Sis glass samples were used fiom two different batches at each condition, vacuum and ambient processing, for tbe density measurement... 

The shape of the average specimen is such that only rarely can it be directly placed into the diffractometer for analysis, so that special care has to be taken to achieve the random distribution of the crystallites to have meaningful peak intensities. The problems arising in sample preparation are (1) Particle size. The powdered sample must consist of particles smaller than 5 pm. Collection and separation of particles of these dimensions can be effected by sieving, sedimentation, or elutriation. (2) Surface flatness. Special precautions are needed to make the surface smooth and flat, with its plane including the diffractometer axis. If required, common binders, for instance, collodion, paraffin wax, or silicone grease, are applicable. (3) Preferred orientation. When it is necessary to ensure that the particles do not show preferred orientation, mix crushed glass or other amorphous medium with the powder or coat the plane surface of the sample carrier with a film of adhesive that dries at a moderate rate and then dust a layer of powder on the adhesive, polyfvinyl chloride), after it has become tacky. 

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