The invention discloses a
metal halide pill of a mercury-containing
metal halide lamp, a preparation method of the
metal halide pill, and the mercury-containing
metal halide lamp. The metal halide
pill of the mercury-containing
metal halide lamp contains
sodium iodide,
thallium iodide,
indium iodide,
calcium iodide and
cerium iodide, and a
mole ratio of
sodium to
thallium to
indium to
calcium to
cerium in
sodium iodide,
thallium iodide,
indium iodide,
calcium iodide and
cerium iodide metal halide is (0.3-0.8):(0.01-0.05):(2.0*10<-3>-5.0*10<-3>):(0.1-0.4):(1.0*10<-3>-6.0*10<-3>). The preparation method of the metal halide pill comprises the steps of preparing a
sodium iodide, thallium iodide, indium iodide,
calcium iodide and cerium iodide mixture fusion solution, ejecting and cooling the mixture fusion solution, solidifying the mixture fusion solution into a ball, and performing
impurity removal and screening on the solidified ball. The mercury-containing
metal halide lamp adopts a synergistic effect of
sodium iodide, thallium iodide, indium iodide,
calcium iodide and cerium iodide, so that the mercury-containing metal halide lamp containing the metal halide pill is stable in
color temperature,
corrosion to an
electric arc tube is effectively avoided, and the mercury-containing metal halide lamp is high in lighting effect, good in
color rendering index and
color temperature and long in service life.