Breeze additives

Calcined petroleum coke breeze with a high fixed carbon content of 99% is used in deepwell applications. The material has a low particle size and, with suitable additives, may be converted into a slurry and pumped into a borehole. The sulphur content of this material is high (1 -4%), yet moisture (0-2%), ash (0-4%) and volatiles (0-4%) are low. The typical resistivity of this material is 0 -15 ohm m. 

Work at the EPA Gulf Breeze Laboratory has demonstrated the potential usefulness of encapsulation in the bioremediation of PAHs. A model system has been developed in which a pure culture capable of degrading fluoranthene (strain EPA505) has been successfully encapsulated in polyurethane foam and polyvinyl alcohol (Baker et al., 1988). The capsules can be stored for several months at 4 °C with only minimal loss of viability. Upon addition of the capsules to moist soil, fluoranthene mineralization commenced in approximately the same way as observed when fresh bacterial cells were added to the soil. These results are shown in Figure 5.7a. Since the same inoculation size was used in all flasks during this experiment, the results suggest that the immobilization process does not significantly affect microbial activity. 

ClFg is an important interhalogen compound and has been studied by Breeze et a/.,368 with a small basis set. It can be regarded as derived from C1F by the addition of two fluorine atoms by way of a three-centre bond. 

Moisture content. The regime of the moisture content over the sea is determined by the processes of interaction between the air and the sea surface. In coastal regions, the diurnal variations in the moisture content are additionally affected by the breeze circulation. The daytime breeze supplies humid air from the sea to land areas. In contrast, the nighttime breeze delivers dry air to the sea surface. The flux of relatively dry air is also provided by foehns and boras. 

A well-known addition to the basic machine is a separate reroll ring beyond the rim of the main disc (see Fig. 3.14). Formed product-size agglomerates are ejected over the rim into this peripheral ring where they are further smoothed and formed into more spherical shapes. A surface layer of fines, such as coke breeze in iron ore green balls or an anti-caking dust to improve storage properties, may be added in the reroll ring. 

Several wind models of analytical nature exist. They differ in their level of physical sophistication and in their way to parametrize the wind characteristics. In all cases, the wind is assumed to be spherically symmetric, which appears to be a reasonable first approximation even in two-dimensional simulations, at least late enough after core bounce. In addition, the wind is generally treated as a stationary flow, meaning no explicit time dependence of any physical quantity at a given radial position. Newtonian and post-Newtonian descriptions of a spherically symmetric stationary neutrino-driven (supersonic) wind or (subsonic) breeze emerging from the surface of a PNS have been developed. The reader is referred to [24] for the presentation of a Newtonian, adiabatic and steady-state model for the wind and breeze regimes, and for a general-relativistic steady-state wind solution. 

Breeze Additives A170 pitch coke breeze was further carbonized to HTTs of 900 K, 1000 K, 1100 K and 1200 K at 3 K min under N2 with a soak time of 0 5 h ... 

Breeze Additives. Optical microscopy of the Six Bells (CR 301a), Cortonwood (CR 401) and Maltby (CR 502) cokes with the A170 pitch coke breeze additives shows that the breeze additives with predominantly flow domain anisotropy optical texture are easily distinguishable from the surrounding coal coke of predominantly fine-grained mosaics. The effect of carbonization to 1200 K upon the petroleum coke breeze is to increase progressively the number and size of fissures within the breeze particles. 

For the Cortonwood and Maltby coals the single coal cokes are significantly weaker than those cokes with breeze additives, even 1200 K breeze additives. 

It therefore appears that pitch coke breeze additives can enhance the coke strength of poorer quality caking coals and that the pitch coke breezes of lower HTT (higher volatile content) produce the best results. It should be emphasized that only one variable (HTT of the breeze) has been investigated here other variables include size and shape of the breeze particles and percentage by weight added to the carbonization system. 

Not only quantitative, but also qualitative changes of immune adjuvants were observed. Activated macrophages acquired new biological activities they were shown to modulate the activity of T-cells and to increase the number of T-lymphocytes in spleen (Toujas et al., 1975). In addition, they stimulated the activity of B-cells and inhibited the proliferation of tumor cells by a direct action on the immune system macrophages activate lymphocytes, which act as effector cells and kill target tumor cells by direct contact (Baum and Breeze, 1976). 

Almost any coal can be burned successfully on some type of stoker. In addition, many byproducts and waste fuels, such as coke breeze, wood wastes, pulpwood bark, and bagasse, can be used either as a base or auxiliary fuel. 

Graphite anodes are made by mixing calcined petroleum coke particles and coal tar pitch binder. The desired shape is heated at 2800°C in order to convert amorphous carbon to crystalline carbon (graphite), which is immune to chloride solutions [10-11]. These anodes are normally impregnated with linseed oil or synthetic resins for reducing porosity and spalling, hi addition, the anodes are buried in the soil and backfilled with coke breeze for a uniform distribution... 

The productivity is mainly determined by the permeability of sinter bed. Any factor which has an effect on the permeability will have an influence on the productivily. On one hand, coarser coke breeze and limestone produce larger porosity of the sinter bed. On the other hand, because of poor granulation characteristics of coke breeze, the position of coarser coke breeze in the granulation particle is different from that of intermediate and finer coke breeze. Fig.l shows coke breeze and limestone particle size on FFS and -5mm fraction. The result shows that FFS is faster in experiment 1 which coke breeze and limestone mean particle size are 2.33 and 2.38 mm. In addition, -5mm fraction increases and again decreases afterwards with a decrease of FFS increasing. When coke breeze and limestone are 1.71 and 1.55 mm (in experiment 5), -5mm fraction reaches minimum. 

Coke breeze South Aliiea Coneentrate Returns Chlorite Bentonite Water Addition... 

With water addition of 12%,the number of particles whose diameters are more than 3mm reaches 93.2%, permeability index is 1.93,which gets a better granulation effect. With the increase of coke dosage, sintering quality grows good first then drops. The suitable coke breeze dosage is recommended at 12%. Sinter yield of 84.03%, shatter index of 83.4% tumble index of 72.57% and abrasion index of 11.43% are achieved respectively. 

Crelling et al. (ref. 13) quantified effects of additions of weathered coals during co-carbonizations with fresh coals. A decrease in coke stability and an increase in coke reactivity and breeze content were observed as the proportion of weathered coal in the blend was increased. An increase of reactivity and a decrease of strength was aiso observed by Pis et al. (ref. 14) in cokes from low temperature oxidised coals. Pre-... 

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