The invention relates to a lightweight
saggar for
roasting a positive
electrode material of a
lithium battery and a preparation method thereof. The invention adopts the technical scheme which is characterized in that the preparation method comprises the following steps: firstly adopting 30-45wt% of
spodumene, 30-40wt% of azorite, 10-20wt% of Suzhou soil and 5-10wt% of
titanium dioxide as raw materials, adding 4-6wt% of water, and uniformly mixing to prepare
glaze; then adopting 45-65wt% of
mullite lightweight aggregate, 15-20wt% of
kyanite, 10-20wt% of
aluminium oxide micropowder and 10-20wt%of Suzhou soil as a mixture, adding a bonding agent with the amount being 10-15wt% of the amount of the mixture, uniformly mixing, and mechanically pressing and molding to obtain a
saggar matrix; uniformly distributing the
glaze onto the working surface of the bottom part of the
saggar matrix, mechanically pressing again,
drying, and insulating thermal for 3-10 hours under the condition with the temperature of 1,330-1,400 DEG C to prepare the lightweight saggar for
roasting the positive
electrode material of the
lithium battery. The lightweight saggar and the preparation method have the beneficial effects that the production cost is low and the preparation process is simple; the prepared lightweight saggar for
roasting the positive
electrode material of the
lithium battery is excellent inthermal shock stability, good in
erosion resistance and long in service life.