CAJ | 학술논문

通过对石港、小屯、兖州、黄陵4种煤进行单煤制浆及不同比例2种煤的配煤制浆实验，研究配煤制浆对水煤浆的成浆性、流变性及稳定性的影响。单煤的成浆性研究表明：不同煤种成浆浓度有差异，氧碳比低的煤种成浆性较好，最大成浆浓度较高；水煤浆在一定浓度范围内具有剪切变稀的非牛顿流体特性，且浓度越高剪切变稀特性越明显。配煤制浆中，由于煤种间的相互作用效果不同，同一种煤与不同的煤分别相配，以及配比的不同，对水煤浆的流变性及稳定性影响不同；配煤制浆对浆体的成浆性影响具有明显的非线性特点，实验中配煤制浆的实际成浆浓度和线性加权平均得到的最大成浆浓度间最大相差1．82个百分点。稳定性试验表明，在正常的水煤浆浓度下，无论是单煤还是配煤制取的水煤浆，20天后析水率都比较合理，在15％以下。不同的煤种配煤制浆后对稳定性有不同的影响。
통과대석항、소둔、연주、황릉4충매진행단매제장급불동비례2충매적배매제장실험，연구배매제장대수매장적성장성、류변성급은정성적영향。단매적성장성연구표명：불동매충성장농도유차이，양탄비저적매충성장성교호，최대성장농도교고；수매장재일정농도범위내구유전절변희적비우돈류체특성，차농도월고전절변희특성월명현。배매제장중，유우매충간적상호작용효과불동，동일충매여불동적매분별상배，이급배비적불동，대수매장적류변성급은정성영향불동；배매제장대장체적성장성영향구유명현적비선성특점，실험중배매제장적실제성장농도화선성가권평균득도적최대성장농도간최대상차1．82개백분점。은정성시험표명，재정상적수매장농도하，무론시단매환시배매제취적수매장，20천후석수솔도비교합리，재15％이하。불동적매충배매제장후대은정성유불동적영향。
Four different coals, Shigang, Xiaotun, Yanzhou, and Huangling coals, were blended with each other in different proportions, and the effect of blending coals on the slurl＂y ability, rheology and stability of coal water slurry （CWS） were studied. The slurry ability, rheology and stability of CWS prepared by the single coal were also researched. Results show that coals with lower O/C ratio have better slurry ability. The coal water slurries behave as the properties of non-Newtonian fluids over certain range of concentration, and the shear thinning behavior is stronger with increasing solid concentration. Blending coals can influent the rheology and stability of CWS. However, blended with the same coal, different coal type and blending ratio have different effects on the rheology and stability. In addition, the effects of coal blending on slurry ability are non-linear. The maximum solid concentration of blending coal water slurl＂y is not equal to the weighted average value of individual coal, with the maximum deviation reaching 1.82 percentage points. Stability experiment shows that, water separation ratio after 20 days is below 15% for either the single coal or the blending coal water slurry. And blending different coals has different effects on the stability.